MemberShip Setup

Hi there,

How can I setup the membership plugin to have in the members "Author" or "Subscriber" ?
Within the membership signup process, I have to give choice between 2 levels :
- ability to post comments (= WP Subscriber)
- ability to write post + manage their own media + comments (=WP Author)

I didn't see in the plugin configuration where I can make the choice per level. I have no protected content in the site.

In the network admin, how can I setup the subscriptions for the network (visitor can register or not) ?

Thanks
Kind regards