is it possible to group user's upon registration ?
like there was a field that will be fill up to group themselves.
example the registration of student and teacher

thank you

sir i mean is, it can be possible that in the registration form a user will choose in a drop down (single field) then they will be grouped.

example sir
the field contains Teacher and Student
if the user was a teacher it has the access for some page and if a student it will be restricted for some page

and what plug in should i purchase

thank you sir it will be a big help for my thesis