On the Main Menu, select Play Now, then select Local Match. You can change the Course or Format here if you want. Just be sure to keep it as a 4-player game type (no Match Play). You also want to make sure Turn Order is Off under New Round Settings. To change it, select New Round Settings, then Rules, then Turn Order OFF.
Then back on the Local Match screen, select Play (New Round).
On the next Local Match screen that shows your golfer, press
to Add Player. Then select Add Ghost (or Add Live Ghost might work also - I used regular Ghost). Then select any gamertag and select Add to Group to add its ghost to your game.
Repeat the Add Player steps 2 more times to get 3 total ghosts.
Since you only need to complete a full round and winning isn't necessary, it doesn't matter which ghosts you pick. But if you want to do well against them, try to pick ghosts whose Score (Net) value is a high positive (over par) number, not a negative (under par) number.
If you forgot to turn Turn Order off, you can do it here also (
Turn Order OFF,
Once your group is full with yourself and the 3 ghosts, click in your
to begin the round.
If you still forgot to turn off Turn Order, you can change it during the match by pressing
and highlighting Turn Order and change to Off.
Finish the round and the achievement will be yours.Thanks to Goots 88 for the Turn Order tip.