Please don't panic, this instrument makes course laying easy. Just follow these instructions. Basically all we do is treat the leeward mark (Mark 3) as a Man overboard (MOB) and navigate around him.
Do not reset MOB anywhere else but alongside Mark 3. If you do it will be lost.

GPS will search for satellites then open. Press "PAGE" approx 4 times and the screen above will appear.

This screen shows BEARING to MOB., SPEED, DIST DEST. (Distance to MOB in feet until over 500ft then NM) and TRACK (your current heading when moving) nb. beware this is not a compass and will not be accurate when stationary.
Once you are on this Page you only need to touch the MOB & ENTER buttons.

After you have dropped Mark 3 (start mark) go alongside and press "MOB" until a screen appears asking if you wish to navigate to this point. Press "ENTER" to accept.

Proceed to windward to pre agreed distance checking that the BEARING (to MOB) shows the back bearing from Mark 1 to Mark 3.

At agreed distance for Mark A check that BEARING (to MOB) is still correct before dropping Mark A

Continue to agreed distance for Mark 1 once again checking BEARING (to MOB) is still correct before dropping Mark 1

Refer to your Wind direction plotter sheet for heading for Mark 2 and proceed in that direction checking with the compass that your back bearing to Mark 1 is correct. When BEARING (to MOB) shows the required heading to Mark 3 double check your back bearing to Mark 1 before dropping Mark 2

Head towards Mark 3 until the both the back bearing to Mark A and the BEARING (to MOB) are correct before dropping Mark B