Combining multiple balls is easy. After connecting the first ball, press the ball icon at the top right of the screen. When the icon turns white, the app is ready to connect the next ball. You can connect up to four balls.
Once you have connected another ball, my player icon will appear at the top left of the screen. You can press the icon to change the grouping of throws during the session. If there are more than one thrower in a session, the throws are split between the throwers regardless of which ball the player throws. In the session summary, throws are always distributed based on throwers.
You can also tap the countdown counter. In this case, the view changes to a bar chart, making it easier to compare between balls or throwers. By clicking on a single bar chart, the information at the bottom is updated only for the selected ball or thrower.