Hello I want to create a app for my self with push notifications, firebase and OneSignal but the catch is I need to be able to add users (admins) and the must be able to add Groups is Monday Tuesday ect and then manage users by groups and members… So on Monday send a push notification out (we are coming today) to all in that admins group for Monday and then as they get closer to group 1 then we are here then group2 later and 3 and 4 and so on is this possible and where should I start