diff --git a/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/EventForm.kt b/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/EventForm.kt
index 6de85f08a..cc9703638 100644
--- a/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/EventForm.kt
+++ b/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/EventForm.kt
@@ -25,8 +25,12 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.mutableStateSetOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
@@ -40,6 +44,7 @@ import com.infomaniak.calendar.components.eventdetail.component.Section
 import com.infomaniak.calendar.components.eventdetail.component.TitleEditable
 import com.infomaniak.calendar.components.eventdetail.form.component.AddReminderButton
 import com.infomaniak.calendar.components.eventdetail.form.component.AllDaySwitch
+import com.infomaniak.calendar.components.eventdetail.form.component.ReminderOffsetDialog
 import com.infomaniak.calendar.components.eventdetail.models.EventColorChoice
 import com.infomaniak.calendar.components.eventdetail.modifier.EventSharedElement
 import com.infomaniak.calendar.components.eventdetail.modifier.ProvideEventSharedTransition
@@ -100,7 +105,18 @@ fun EventForm(
         }
 
         Section(EventSharedElement.Divider3) {
-            AddReminderButton(onClick = {})
+            var isReminderOffsetDialogVisible by rememberSaveable { mutableStateOf(false) }
+
+            AddReminderButton(onClick = { isReminderOffsetDialogVisible = true })
+
+            if (isReminderOffsetDialogVisible) {
+                ReminderOffsetDialog(
+                    selectedOffset = null,
+                    onOffsetSelect = { isReminderOffsetDialogVisible = false }, // TODO: Wire the selected offset to the event reminders
+                    onCustomClick = {}, // TODO: Open the custom reminder editor
+                    onDismissRequest = { isReminderOffsetDialogVisible = false },
+                )
+            }
         }
 
         Section(EventSharedElement.Divider4) {
diff --git a/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/component/ReminderOffsetDialog.kt b/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/component/ReminderOffsetDialog.kt
new file mode 100644
index 000000000..8925d3af0
--- /dev/null
+++ b/CalendarComponents/EventDetail/src/main/kotlin/com/infomaniak/calendar/components/eventdetail/form/component/ReminderOffsetDialog.kt
@@ -0,0 +1,104 @@
+/*
+ * Infomaniak Calendar - Android
+ * Copyright (C) 2026 Infomaniak Network SA
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.infomaniak.calendar.components.eventdetail.form.component
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.selection.selectableGroup
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.AlertDialogDefaults
+import androidx.compose.material3.BasicAlertDialog
+import androidx.compose.material3.ListItem
+import androidx.compose.material3.ListItemDefaults
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.RadioButton
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import com.infomaniak.calendar.components.foundation.utils.timeFormatter.formatDurationOffset
+import com.infomaniak.calendar.components.resources.R
+import com.infomaniak.designsystem.core.theme.EsdsTheme
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.days
+import kotlin.time.Duration.Companion.hours
+import kotlin.time.Duration.Companion.minutes
+
+private val reminderOffsetPresets = listOf(
+    null,
+    Duration.ZERO,
+    (-5).minutes,
+    (-10).minutes,
+    (-15).minutes,
+    (-30).minutes,
+    (-1).hours,
+    (-1).days,
+)
+
+@Composable
+internal fun ReminderOffsetDialog(
+    selectedOffset: Duration?,
+    onOffsetSelect: (offset: Duration?) -> Unit,
+    onCustomClick: () -> Unit,
+    onDismissRequest: () -> Unit,
+) {
+    BasicAlertDialog(onDismissRequest = onDismissRequest) {
+        Surface(
+            shape = AlertDialogDefaults.shape,
+            color = AlertDialogDefaults.containerColor,
+            tonalElevation = AlertDialogDefaults.TonalElevation,
+        ) {
+            Column(
+                Modifier
+                    .selectableGroup()
+                    .verticalScroll(rememberScrollState())
+                    .padding(EsdsTheme.spacing.md),
+            ) {
+                val colors = ListItemDefaults.colors(containerColor = AlertDialogDefaults.containerColor)
+
+                reminderOffsetPresets.forEach { offset ->
+                    val isSelected = offset == selectedOffset
+
+                    ListItem(
+                        selected = isSelected,
+                        onClick = { onOffsetSelect(offset) },
+                        trailingContent = { RadioButton(selected = isSelected, onClick = null) },
+                        colors = colors,
+                    ) {
+                        offset?.let { Text(it.formatDurationOffset()) } ?: Text(stringResource(R.string.alarmOffsetNone))
+                    }
+                }
+
+                ListItem(onClick = onCustomClick, colors = colors) {
+                    Text(stringResource(R.string.customAlarmLabel))
+                }
+            }
+        }
+    }
+}
+
+@Preview
+@Composable
+private fun Preview() {
+    MaterialTheme {
+        ReminderOffsetDialog(selectedOffset = null, onOffsetSelect = {}, onCustomClick = {}, onDismissRequest = {})
+    }
+}
diff --git a/CalendarComponents/Resources/src/main/res/values-da/strings.xml b/CalendarComponents/Resources/src/main/res/values-da/strings.xml
index 937c049f0..8b6e4c8d7 100644
--- a/CalendarComponents/Resources/src/main/res/values-da/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-da/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Tilføj</string>
+    <string name="alarmOffsetNone">Ingen</string>
     <string name="allDayLabel">Hele dagen</string>
     <string name="attendees">Deltagere</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Har en placering</string>
     <string name="contentDescriptionSearch">Søg</string>
     <string name="contentDescriptionToday">I dag</string>
+    <string name="customAlarmLabel">Brugerdefineret</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dag</item>
         <item quantity="other">%d dage</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-de/strings.xml b/CalendarComponents/Resources/src/main/res/values-de/strings.xml
index 01746f1de..ec5fd646d 100644
--- a/CalendarComponents/Resources/src/main/res/values-de/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-de/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Hinzufügen</string>
+    <string name="alarmOffsetNone">Keine</string>
     <string name="allDayLabel">Den ganzen Tag</string>
     <string name="attendees">Teilnehmer</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Hat einen Standort</string>
     <string name="contentDescriptionSearch">Suchen</string>
     <string name="contentDescriptionToday">Heute</string>
+    <string name="customAlarmLabel">Benutzerdefiniert</string>
     <plurals name="dayAmount">
         <item quantity="one">%d Tag</item>
         <item quantity="other">%d Tage</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-el/strings.xml b/CalendarComponents/Resources/src/main/res/values-el/strings.xml
index 0eb8ef5ae..7f2b4932a 100644
--- a/CalendarComponents/Resources/src/main/res/values-el/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-el/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Προσθήκη</string>
+    <string name="alarmOffsetNone">Καμία</string>
     <string name="allDayLabel">Όλη την ημέρα</string>
     <string name="attendees">Συμμετέχοντες</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Έχει τοποθεσία</string>
     <string name="contentDescriptionSearch">Αναζήτηση</string>
     <string name="contentDescriptionToday">Σήμερα</string>
+    <string name="customAlarmLabel">Προσαρμοσμένο</string>
     <plurals name="dayAmount">
         <item quantity="one">%d ημέρα</item>
         <item quantity="other">%d ημέρες</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-es/strings.xml b/CalendarComponents/Resources/src/main/res/values-es/strings.xml
index 2f085ff97..869a48362 100644
--- a/CalendarComponents/Resources/src/main/res/values-es/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-es/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Añadir</string>
+    <string name="alarmOffsetNone">Ninguna</string>
     <string name="allDayLabel">Todo el día</string>
     <string name="attendees">Invitados</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Tiene una ubicación</string>
     <string name="contentDescriptionSearch">Buscar</string>
     <string name="contentDescriptionToday">Hoy</string>
+    <string name="customAlarmLabel">Personalizado</string>
     <plurals name="dayAmount">
         <item quantity="one">%d día</item>
         <item quantity="other">%d días</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-fi/strings.xml b/CalendarComponents/Resources/src/main/res/values-fi/strings.xml
index 5a7240484..27de4842d 100644
--- a/CalendarComponents/Resources/src/main/res/values-fi/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-fi/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Lisää</string>
+    <string name="alarmOffsetNone">Ei mitään</string>
     <string name="allDayLabel">Koko päivän</string>
     <string name="attendees">Osallistujat</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">On sijainti</string>
     <string name="contentDescriptionSearch">Haku</string>
     <string name="contentDescriptionToday">Tänään</string>
+    <string name="customAlarmLabel">Mukautettu</string>
     <plurals name="dayAmount">
         <item quantity="one">%d päivä</item>
         <item quantity="other">%d päivää</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-fr/strings.xml b/CalendarComponents/Resources/src/main/res/values-fr/strings.xml
index d0ac0dd7d..6506d3d24 100644
--- a/CalendarComponents/Resources/src/main/res/values-fr/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-fr/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Ajouter</string>
+    <string name="alarmOffsetNone">Aucun</string>
     <string name="allDayLabel">Journée</string>
     <string name="attendees">Invités</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">A un emplacement</string>
     <string name="contentDescriptionSearch">Rechercher</string>
     <string name="contentDescriptionToday">Aujourd’hui</string>
+    <string name="customAlarmLabel">Personnalisé</string>
     <plurals name="dayAmount">
         <item quantity="one">%d jour</item>
         <item quantity="other">%d jours</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-it/strings.xml b/CalendarComponents/Resources/src/main/res/values-it/strings.xml
index afdaea467..dbc33e2c4 100644
--- a/CalendarComponents/Resources/src/main/res/values-it/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-it/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Aggiungi</string>
+    <string name="alarmOffsetNone">Nessuno</string>
     <string name="allDayLabel">Tutto il giorno</string>
     <string name="attendees">Invitati</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Ha una sede</string>
     <string name="contentDescriptionSearch">Cerca</string>
     <string name="contentDescriptionToday">Oggi</string>
+    <string name="customAlarmLabel">Personalizzato</string>
     <plurals name="dayAmount">
         <item quantity="one">%d giorno</item>
         <item quantity="other">%d giorni</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-nb/strings.xml b/CalendarComponents/Resources/src/main/res/values-nb/strings.xml
index cdf715e17..5fe5fb68d 100644
--- a/CalendarComponents/Resources/src/main/res/values-nb/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-nb/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Legg til</string>
+    <string name="alarmOffsetNone">Ingen</string>
     <string name="allDayLabel">Hele dagen</string>
     <string name="attendees">Deltakere</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Har en beliggenhet</string>
     <string name="contentDescriptionSearch">Søk</string>
     <string name="contentDescriptionToday">I dag</string>
+    <string name="customAlarmLabel">Egendefinert</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dag</item>
         <item quantity="other">%d dager</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-nl/strings.xml b/CalendarComponents/Resources/src/main/res/values-nl/strings.xml
index aca3784ad..62049234f 100644
--- a/CalendarComponents/Resources/src/main/res/values-nl/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-nl/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Toevoegen</string>
+    <string name="alarmOffsetNone">Geen</string>
     <string name="allDayLabel">De hele dag</string>
     <string name="attendees">Deelnemers</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Heeft een locatie</string>
     <string name="contentDescriptionSearch">Zoeken</string>
     <string name="contentDescriptionToday">Vandaag</string>
+    <string name="customAlarmLabel">Aangepast</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dag</item>
         <item quantity="other">%d dagen</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-pl/strings.xml b/CalendarComponents/Resources/src/main/res/values-pl/strings.xml
index ea64ca002..1f933d370 100644
--- a/CalendarComponents/Resources/src/main/res/values-pl/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-pl/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Dodaj</string>
+    <string name="alarmOffsetNone">Brak</string>
     <string name="allDayLabel">Przez cały dzień</string>
     <string name="attendees">Uczestnicy</string>
     <plurals name="attendeesAcceptedCount">
@@ -65,6 +66,7 @@
     <string name="contentDescriptionHasLocation">Ma lokalizację</string>
     <string name="contentDescriptionSearch">Szukaj</string>
     <string name="contentDescriptionToday">Dziś</string>
+    <string name="customAlarmLabel">Niestandardowe</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dzień</item>
         <item quantity="few">%d dni</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-pt/strings.xml b/CalendarComponents/Resources/src/main/res/values-pt/strings.xml
index f2854fefd..77d6d4925 100644
--- a/CalendarComponents/Resources/src/main/res/values-pt/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-pt/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Adicionar</string>
+    <string name="alarmOffsetNone">Nenhum</string>
     <string name="allDayLabel">O dia todo</string>
     <string name="attendees">Convidados</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Tem uma localização</string>
     <string name="contentDescriptionSearch">Pesquisar</string>
     <string name="contentDescriptionToday">Hoje</string>
+    <string name="customAlarmLabel">Personalizado</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dia</item>
         <item quantity="other">%d dias</item>
diff --git a/CalendarComponents/Resources/src/main/res/values-sv/strings.xml b/CalendarComponents/Resources/src/main/res/values-sv/strings.xml
index efad674a0..35a005ef0 100644
--- a/CalendarComponents/Resources/src/main/res/values-sv/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values-sv/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Lägg till</string>
+    <string name="alarmOffsetNone">Ingen</string>
     <string name="allDayLabel">Hela dagen</string>
     <string name="attendees">Deltagare</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Har en plats</string>
     <string name="contentDescriptionSearch">Sök</string>
     <string name="contentDescriptionToday">Idag</string>
+    <string name="customAlarmLabel">Anpassad</string>
     <plurals name="dayAmount">
         <item quantity="one">%d dag</item>
         <item quantity="other">%d dagar</item>
diff --git a/CalendarComponents/Resources/src/main/res/values/strings.xml b/CalendarComponents/Resources/src/main/res/values/strings.xml
index 1c9ead37c..556018c4c 100644
--- a/CalendarComponents/Resources/src/main/res/values/strings.xml
+++ b/CalendarComponents/Resources/src/main/res/values/strings.xml
@@ -17,6 +17,7 @@
   -->
 <resources>
     <string name="addEventLabel">Add</string>
+    <string name="alarmOffsetNone">None</string>
     <string name="allDayLabel">All Day</string>
     <string name="attendees">Attendees</string>
     <plurals name="attendeesAcceptedCount">
@@ -53,6 +54,7 @@
     <string name="contentDescriptionHasLocation">Has a location</string>
     <string name="contentDescriptionSearch">Search</string>
     <string name="contentDescriptionToday">Today</string>
+    <string name="customAlarmLabel">Custom</string>
     <plurals name="dayAmount">
         <item quantity="one">%d day</item>
         <item quantity="other">%d days</item>