Build an Android app For a school

This Is an application for school to inform the News and Event alert It should be 6 level User account For Example here is the 6 levels A,B,C,D,E,F,G,H A can create (remove, edit) and provide login credentials of users (B,B1,B2,B3,B4 etc…. ) and make B as admin of that group B will post news and events others(B1,B2,B3,B4 etc…. ) can see that news in their app. B will create an event example: parents meeting. This events alert will show in all the users app B1,B2,B3,B4 etc…. 3 Times alert about that event (2 days back, one day back, and the same day morning) B can Create (remove, edit) and provide login credentials of users (C, C1, C2, C3, C4, C5 etc…). and make C as admin of that group C will post news and events others (C1, C2, C3, C4, C5 etc….) can see that news in their app. C will create an event example: parents meeting. This events alert will show in all the users app C2,C3,C4,C5 etc….3 Times alert about that event (2 days back, one day back ,and the same day morning) This process will repeat …….. All the admin can see and edit or delete Users ,news and events of his below group details Ex: A can see all the users details (EVENTS ,ALERTS) of B,C,D,E,…… If A,B,C,D,E,F,G,H modules are considered as Group 1 Super admin can be create 50 groups Like Group 1, Group2, Group3, Group4 etcc. There should be an option to create their own profile Sometimes Some users are includes in toomany groups Example D and D1 may be include group,B,E,F or H Normal Users in all levels get only news and event alerts posted by their admin and a provision to send mag to their admin Please go through this details and only ask the portion you need explanation .I describe all the details I need in this app.