This keyboard has only one super key, so I want to remap the menu key to make up for that.
Next in my
... to make it the right hand windows key. Then all that remains is to activate the key remaps. This usually happens automatically on login to your x session, but if your Desktop Environment doesn't do that you can run it manually as
I don't know what system you use, but if it is quite modern login as root, go to
Copy (make a backup)
Logout, login (