Duration picker alpha-version done

src/app/shared/popover/group-duration/group-duration.page.ts

@@ -1,4 +1,5 @@
 import { Component, OnInit } from '@angular/core';
+import { PopoverController } from '@ionic/angular';
 
 @Component({
   selector: 'app-group-duration',
@@ -7,9 +8,14 @@ import { Component, OnInit } from '@angular/core';
 })
 export class GroupDurationPage implements OnInit {
 
-  constructor() { }
+  constructor(
+    public popoverController: PopoverController,
+  ) { }
 
   ngOnInit() {
   }
+  close(){
+    this.popoverController.dismiss();
+  }
 
 }