xfam.tech primarily relies on the Profile Share system to manage privacy. When you purchase someone's Profile Share, you gain access to their Private Chat and Premium Posts.
Currently, the platform allows anyone to reply to your posts, but in the future, there may be an option to limit who can respond. That being said, here is how to alter these settings.
To adjust the privacy settings of your post, click on the button as shown below. By default, this button displays "Everyone," allowing everyone to see your posts. In the future, more options will be available as this feature is currently under development.