Very good plugin

You can use user-role-editor in conjunction with PMPro.

See this for assigning a role to members:
https://www.paidmembershipspro.com/2011/10/give-new-members-author-role/

See this for automatically setting up roles for each membership level:
https://www.paidmembershipspro.com/2014/01/automatically-create-wordpress-role-membership-level-thanks-josh-levinson/