How do I set my app launcher to: (alt + space)?

Whenever I try to set Ulauncher to alt space, the right click menu appears. Is there a way to turn it off, so I can set Ulauncher to alt space?

In your keybaord shortcuts, you should be able to change the alt+space shortcut for Activate the Window Menu to something else, then try assigning alt+space to ulauncher.

I assigned it to something else and Ulauncher did recognize it. I'll assume it is not a zorin problem at the moment. Thanks Aravisian.