With the membership function of a form builder you can assign any WordPress user to any group. Restrict any content on a page and have a PHP function available to build anything you might want – from restricted content to posts or post types, and more.
Why not use a membership plugin instead?
Membership plugins like Memberpress are great if you are building a full-blown membership site. But if you want to restrict some content to your clients or even offer some gated content (pay to see), a WordPress form builder might be all you need.
So if you don’t want to spend too much time learning and configuring a full fledged membership solution, then this feature will be just right for you.