How to test User's Roles in Demo Version

I have created a demo account and I want to use that to register new (fake) users on the forum to test the roles of different member groups. Is there any option which I can use to register new users and then testing their role?
 
You don't have to do that. Just go to ACP and to Users and list all users. And then go to your own user and change your secondary usergroup to whatever you want to test.
 
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