Use these keyboard shortcuts to move an application to a different workspace.
Super + Shift + 1 to move the focused application to workspace 1
Super + Shift + 2 to move the focused application to workspace 2
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This will work out of the box for Qwerty keyboard users.
If it is not working for you make sure you DO NOT USE the numeric keypad for the numbers and that you check if you have an azerty or qwerty or something else.
In the config you can easily switch between azerty and qwerty. Other configuration need to be researched on the net. We are happy to include it for other countries.
In this article we change from qwerty to azerty keyboard shortcuts.