How to remove Alt+F7 window moving hot-key in Xubuntu?

Question

I'd like to use Alt+F7 to search for files in Double Commander.

But when I press Alt+F7 - the hotkey is intercepted and I am offered to move the window.
Settings - Settings manager - Keyboard - Application shortcuts doesn't show Alt+F7 to be bound to anything.

Where can I undefine Alt+F7 hot key then?

Solution

Settings - Window Manager - Keyboard

Double Click the short cut field and choose the key-combination you want

Comments

[Jack Miller]

In 14.04 it is just (System) Settings -> Keyboard. Or use dash search to find "keyboard" (in your language) then move to tab "shortcuts".

[Lee Meador]

No window shortcuts show on my 14.04 machine under System Settings > Keyboard.

[Ron Klein]

@LeeMeador see here: imageshack.com/a/img540/5869/kRt010.png

[Sergei G]

For Ubuntu 18.04 Use Settings -> Devices -> Keyboad and find "Move Window" in the list of the shortcuts.