I wanted to assign custom roles to users when register. I know its using business logic. But if u could make me understand better with some examples or video it would be great. And also what to do after downloading the after service created.
Your question is out of free support scope.
Anyway, I think that these links may be useful for you: https://backendless.com/category/server-code/, https://backendless.com/documentation/users/android/users_user_roles.htm.
I guess that you’ll need to create an “afterRegister” handler, and use “assignRole” method inside it.
Hope it helps.