To turn a project on or off, navigate to Settings --> Project Settings --> click on the "General" tab --> change the "System Status" section --> save. 
Each status will affect the visibility and usability of the project, depending on what you want to do with it:
- Open Project - Opening a project will allow the system to accept registrations and process payments. Use the "Open Project" status only when your project build is complete, you have sufficiently tested your system, and are ready to go live.
- Closed for Registration and Login - Prevents users from registering on the front end and displays a customizable message.
- Development Mode - Test mode that's just like Open Project, but with a red warning box and payments will not go through. Here's how to create test users
- Archive Project - The project is closed and users see a custom message. The project will NOT show up in your project list unless you click "Include Archived Projects."