The screen at the right allows you to select a team to score. Click on the team you wish to score.
In addition to listed information about the team, there is an icon in the left column that indicates the status of the team:
your scores are submitted
your scores are not submitted
you have not completed scoring
you have not started scoring
Submitted is the equivalent of sending your scores to the Score Room as you can't edit them once they are submitted.
However, much like you can get your scores back if you need to, your scores can also be unsubmitted by Head Appraiser, Appraiser Team Organizer, or the Score Room.