Stage Manager is a new feature in macOS 13 Ventura for organizing your windows. If you work in several applications at a time, Stage Manager can be used to easily switch between apps and documents, saving you from the headache of finding the window you need.
This article covers how to turn on and off Stage Manager, how to customize it to your liking, and how it works. It’s very quick and easy to set up.
macOS Ventura: Set up Stage Manager
You can turn on/off Stage Manager in the Control Center, but you can also activate and customize it in System Settings. Here’s how.
Read more at Macworld.com