When you want to add a Substitute on a scoresheet.

On the scoresheet, Click on Options:

1. Click on Add Spare.

2. Choose the team to add Spare.

A spare button will appear at the bottom:

Click the Spare button.

3. Select the player you want to add as the substitute.

4. Click on Select games.

Choose the games that will belong to the spare/sub.

Click on Accept Spare!

If you need to add an additional spare, click on Options > Add Spare.

Then click on Spare and restart the steps from the beginning.