A current season SportsTG account is required for Team Officials.
You as the Team Manager must have one in order to be able to create team sheets for your team's games and to enter game results. You also have to select yourself as the Team Manager on the team sheets.
All coaches and assistant coaches need to have one. The main coach must be selected on your team sheet before you can add any of the players, so it is very important that the coaches have their SportsTG accounts in order.
Your Trainer and Club Volunteer Umpire also must have a current season SportsTG account so that you can select them on the team sheets.
Please note that officials must register for each new season! It doesn't matter if you or your officials were registered in previous seasons, the registration must be renewed every season in the same way that it needs to be done for the players.