How To Use Mission Control?

That symbol is for the Shift key on your keyboard, so the first one is telling you to press the Shift + Up Arrow keys at the same time.

The window in your screenshot is to set keyboard shortcuts. On the left you select, or create, a key combination; on the right you select what you want that key combination to do.

Link to Mission Control guide:

https://support.apple.com/en-us/HT204100

EDLIU wrote:

How do I setup the Mission Control?

What is the "^" in Mission Control and Application Window?

https://discussions.apple.com/content/attachment/5b366f3a-152a-4036-9899-dc8b7de799af

There is nothing to set up. That screen shot shows the default keyboard shortcuts.

>System Preferences>Mission Control

Control key + the up arrow (ie ^ ↑)

From the space that has the window you want to move, enter Mission Control (swipe up with three or four fingers, press the Mission Control key , or press Control- ...

Work in multiple spaces on Mac - Apple Support

Mission Control offers a bird's-eye view of all your open windows, desktop spaces, full-screen apps, and Split View spaces, making it easy to switch between them.

Use Mission Control on your Mac - Apple Suppo

Sorry, I though your screenshot was from the Mission Control pane in System Preferences, but it’s not. At least that’s not what that pane looks like for me in Catalina. Where did you find it?

The link I provided should answer all your questions about Mission Control.