This support article is going to guide you through the workflow on how to update the End of set accordingly.
There are two possible options at the end of the set
After entering the set point, a pop-up for confirmation will rise and will ask for relevant point confirmation. If for any reason, the point is not to be confirmed, Undo the last point must be clicked. Then game is placed back on the previous updating screen for new the action to be updated. 
After entering the set point, a pop-up for confirmation will rise and will ask for relevant point confirmation. After confirming, the next set can be started accordingly with the required actions. 