If you have more than one player in your tee time, only one of the players needs to control the scoring.
The other players can still enter the game.
Any subsequent players to enter the game and go to the scorecard page will be in 'spectator mode'. This is shown by the yellow banner:
Players in spectator mode can view the scorecard and leaderboards and make full use of the GPS functions.
A player in spectator mode can 'take over' scoring at any time by clicking on the yellow banner. This will put the current scorer into spectator mode.