To change the global key set, such as the movement keys, you need the Action Set Panel.
It is usually found in the upper left corner of your screen, if not open it with the edit panel.
The action set panel indicates what set is currently active, although you can’t access the global key set with it usually.
The edit panel has to be open for this.
Now you can change the global keys.
A useful thing to have on the global layer would be your FAP and your “unequip tool” action.
It is also possible to drag actions and tools to your desktop. This can be very useful, to have “private trade” or “private chat” available all the time.
This mode allows you to drag the bar in the upper right corner too.