If you want to add, some additional charge for a particular player. We must press the button for additional charges.
In it you can apply some discount in concrete or as the word indicates, some additional charge. (Water, balls...)

In this example we have loaded a boat of balls and 4 large waters. The water will be distributed for the 4 participants one each, instead of creating 4 additional charges, with the button  the article is divided among all the active participants, so that everyone can pay that charge.