It’s very easy in DEVONthink Pro and Pro Office to move documents and groups from one place to another using the mouse. Dragging items between databases can be cumbersome if you have only one window open but then there’s still the Groups & Tags panel.
Heavy-duty user and forum member korm wrote a great little script that, together with an assigned keyboard shortcut, lets you move selected items from anywhere to anywhere in DEVONthink by only using the keyboard. You can install it directly from within the app by choosing Scripts > More Scripts… (where Scripts is the menu represented by a little AppleScript icon).
Thank you for this great script, korm!