Switch 1: Locks left windows key
Switch 2: Left windows key swaps with left alt
Switch 3: caps switches places with left control
Switch 4: Left windows become FN
I have 1 and 3 turned "on", here's what it looks like:
So as you can see I only have one alt on the left, controls are the same, FN keys on both sides of the spacebar (they are the portal keys), one windows key on the right, one app menu on the right and then another control.