Select to pin the specific window.
How to switch desktops on Windows 11 - Use Multiple desktops how to move windows to another desktop
This allows users to move windows without opening the Task View overlay. Select to pin the specific window
If you’re using multiple virtual desktops, moving a window from one desktop to another is simple. Here are three quick methods: how to move windows to another desktop
Press to select "Move to", then press the number of the destination desktop. Method 3: Pinning Windows Across All Desktops
A new section in System > Multitasking :