When editing a Deck, you have the option to assign a hot key to send all the cards in this deck to another deck, i.e. “Include command to send entire deck to another deck”.
If you try to remove this hot key so that the player is only able to select the option via the right click menu, it is not possible. When you press “delete” while in the “Send Hot Key” field, the key combo you have disappears. However, when you open the Deck properties window again, the hot key returns.
A possible workaround is to create a Deck Global Key Command (this doesn’t show the hot key) which fires off a “Return to Deck” trait but you still need to supply a hot key for this.