"Fee for Event" (singuläres Sportangebot gegen Gebühr)
As Club Manager I can assign a fee to a sports event offered by the club (such as a one-day fitness introduction), so that I can charge members the extra fee for participation in the sports event.
Note that non-members may participate in such a sports event.
Note that the fee may need to be split in two or more subtotals due to tax regulations (one subtotal is taxed with 19% and another subtotal is taxed with 7% VAT).