In my latest project client asked me to add extra interface after login where all roles assigned to that user will be shown and user can choose the single role and login by that role only. But i don't know how to do this in drupal. I tried with role switcher and other module but they didn't work for me ? Any suggestions will be appreciated.
Suppose User x have roles A B C D x can choose single role(eg A) after login and do the work only with that role.