How to Use ASP.NET Identity in asp.net

http://www.dotnetcurry.com/aspnet-mvc/1102/aspnet-mvc-role-based-security

https://www.codeproject.com/Articles/727054/ASP-NET-MVC-Identity-Extending-and-Modifying-R

use this also help you

https://www.c-sharpcorner.com/article/create-identity-in-simple-way-using-asp-net-mvc-5-part-two/

use this second part of that link

How to Assign Role and Rights to that Role in asp.net Idenetity

https://www.c-sharpcorner.com/article/create-identity-in-simple-ways-using-asp-net-mvc-5/

this link help you