1. Access the tournament.
2. Click Post Scores.
3. Click Post Scores by Complex.
4. Find the complex, and click on the desired court/field.
5. Enter the score and check Mark as Final.
6. Click Save.

When the Mark Final box is checked next to a game, the game will be filtered out of the list.

Uncheck Show Only Unfinalized Games to view games that had been marked as final.