To add or remove shots, use the "+" and "-" buttons as shown to keep track of the shots for the corresponding team. Shots will be adjusted for the period currently set in the "Period" box. For example, if the game is set to period 2, any shots added or deducted will be assigned for period 2. These shots will also be assigned to the goalie who is currently in net. If no goalie is in net (i.e the net is empty) the shot(s) will not be assigned to any goalie.
If you need to adjust the shots entered more granularily, click the blue icon as shown below. A modal will pop up which will allow you to keep track and add or deduct shots by period for each goalie.
Click Save when finished.