If you are a developer and would like to add this feature to your game, you can do so in your game's configuration page. More information on this page as well on instructions on how to find it can be found in this help article.
- Go to your game's configuration screen.
- Navigate to the Access menu.
- Check the box that says Allow VIP Servers, set a price for your server, and click the Save button.
Note: For every server purchased, accounts with membership will receive 70% of the price set while non-members will receive 10%.
It is also important to keep in mind that Private Servers are only supported on an individual place basis. If your game/universe uses multiple places and you want to allow VIP servers, it is recommended to allow VIP Servers on the game's lobby/starting place.