Properties seems to be greyed out and my doodad auto guns get defaulted to player 1
None.
Before placing them, select player x in the dropdown box on the top toolbar.
(player x = the player you want to control the doodad)
None.
Place Doodad, select it, right click and do Convert to Terrain, then select the trap, which is a sprite, and change which player owns it.
None.