diff --git a/src/app/features/administration/form/date-select/date-select.component.ts b/src/app/features/administration/form/date-select/date-select.component.ts
index d15f98ba..f3997ba7 100644
--- a/src/app/features/administration/form/date-select/date-select.component.ts
+++ b/src/app/features/administration/form/date-select/date-select.component.ts
@@ -31,6 +31,7 @@ export class DateSelectComponent implements OnInit {
 	timeSlices: TimeSlices[] = []; // ranges of time expressed as strings
 
 	selectionKind = 'range';
+	display: any;
 
 	constructor(
 		private fb: FormBuilder,
@@ -71,4 +72,8 @@ export class DateSelectComponent implements OnInit {
 		this.dateChoices.map((elem) => (elem.timeSlices = Object.create(slices)));
 		this.toastService.display('périodes horaires réinitialisées');
 	}
+
+	openSimple() {
+		this.display = !this.display;
+	}
 }