By using this feature you can restrict how many posts can be viewed, released and how many comments can be submitted for each level / subscription. To activate this option please go to UMP Dashboard -> Extensions -> WP Workflow Restrictions.
Restrict Posts Views
Here you can set for each level how many posts can be viewed by a user with that level. Leave blank for unlimited views.

Restrict Posts Created
Here you can set for each level how many WP posts can be submitted by a user with that level. Leave blank for unlimited submissions.
Restrict Comments Created
Here you can set for each level how many WP comments can be submitted by a user with that level. Leave blank for unlimited comments.
After setting everything up, make sure to Save Changes.