Creating your own games couldn’t be easier with the in-game assets we provide to you. One of the easiest things to do is to create a custom board.
Click on Host -> Chest -> Custom. Then choose Board.
While the boards are locked by default, you can right click and toggle the lock on or off or hover over the board and press L. Then you can move the boards, shrink or enlarge them and place them where you’d like.
ALT Zoom cannot be used on boards, but you can use the Magnify (M) command to view a close up of it if needed.