A computer system is provided. The computer system includes a memory, a user interface, and a processor coupled to the memory and the user interface. The at least one processor is configured to render, via the user interface, a first representation of the computer system and a second representation of a remote computer system distinct from the computer system; receive, via the user interface, input initiating a drag-and-drop operation of a digital resource provided by the remote computer system; detect entry of a cursor effectuating the drag-and-drop operation into the first representation; confine the cursor to a portion of the first representation; move a target proxy window to encompass the portion of the first representation; and free the cursor to continue effectuation of the drag-and-drop operation.