Deleting a Group is simple, but only Group Administrators can do this.
To delete a Group:
Open the Insight Timer app.
Tap the menu icon (☰) in the top-left corner.
Tap Groups.
Open the Group you want to delete.
Tap the Group name or logo at the top to access Group Settings.
Tap the three dots (⋯).
Select Delete Group.
Tap Yes to confirm.
Please note:
Only Group Administrators can delete a Group.
A Public Group with 50 or more members cannot be deleted unless another member is assigned as an Administrator.