Using vs2015: As an administrator of a site I want to be able to create users/ give them passwords/ and assign them roles

I can't find anything straightforward that will  allow me to define Roles then as I create users to assign a role.

I've tried to update all my sites to vs2015 but the lack of Web Admin Tool is driving me back to my comfort-zone of vs2008.

I can't understand (at least know how to implement) anything I've seen regarding AspIdentity.  The login templates are all straight forward but lack the one thing I need .... a role descriptor box.  Is there any simple examples out there.  Life's too short to face this frustration for days and days.