Membership plugins

Hi guys

I am looking for a compatible plugin that will allow me to pre populate some members/users and assign permissions to pages based upon which catergory of membership they have.
The example is that I want to add an intranet area for staff on my site, and also another area for governors.
I don’t want the governors to be able to access the intranet and vice versa the staff to be able to access the governors area.

I have found a plugin which looks perfect for this, called “Simple WordPress Membership”; however it seems as if its not compatible with Enfold.

Is there a plugin which you can recommend to do this.

I don’t want users to have to sign up.