Hello,
The membership option is available on the Admin CP, Payplan Settings page.
One membership is available for the regular license, and if you want to separate between site registered users and membership registered users, you can select the "Manual by Member" option in the Admin CP, General Settings page. It will allow people to register to your site and allow them to upgrade and register to your membership plan.
If you need multiple membership plans or you want to use the script for commercial usage, you can consider the Plus or Extended license, it comes with multiple plans (up to 4) and other features.
You can upgrade your regular license by following the instructions available in the online documentation at https://peppy.link/r6Ysc there is a discount offer during the promotional.
Thank you,