How to Allow Everyone to Read a Forum Category while Restricting Posting and Commenting Privileges to Subscribers Only

[AndrewT]

You can edit permissions for a category so only admins and moderators can write posts. To learn how to change who can post in a category, visit the following page: https://support.wix.com/en/article/wix-forum-creating-a-category

so making specific users moderators could help

for more help with Members area setup Wix Customer Care could help you:
https://support.wix.com/en/article/contacting-wix-customer-care-for-support