create users with different Profiles data

hi dears 
i working on event managment registration and i need to make a roll for visitors and roll for exhibitors 
visitor most enter data to visitor profile with data like
first name,last name , DOB, Mobile Number, tel , fax 
and exhibitor most enter data to exhibitors profile data with different data .
it's easy to make it for visitor or exhibitors with one profile 
how to make it with different data profiles what the logic to make that 


thanks a lot ......
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