How can add # user with role in usersource with 1 click?

Dear all,

As per our current scenario, we have a two projects and two user sources, let me explain with an example for better understanding.

Two projects >

1) Project is – Gujarat and its user source is > GUJ (via internal directory)

2) Project is – NJ and its user source is NJ (via external database – Mysql)

So, our question is is there any possibility to add # of user along with his role in user source at a time?

For example:- We have 1000 users and they have different and mixed roles as mentioned in the note below.

So how can we assign/add 1000 users and their role in internal and external data base user source (GUJ and NJ)?

Are there any export/import options available which makes adding to user source in just one click.

Note:- Some user role as Operator, some user role as Supervisor with Operator, some user role as Administrator with Operator and all (Operator, Supervisor, Administrator,... etc.)

Thanks,

Chirag K.