The "Concession Delivery" model is a great mod that allows you to place a trigger to have the equipment delivered in exchange for a 2% price increase.
-Hold "Left Shift" +" "Left Alt" to display the marker on the ground that represents the location.
-Hold down "Shift left" + "Alt left" and press "S" to set the location. (A sound will be played and the marker will blink once.)
