I have doubts regarding showers for bicycle racks calculations for WEp1. In theory only certain group of office staff will use them, so should I create a specyfic extra group (in table WEp1-2 - fixture group definition) of FTE`s only for showers (i.e. 5% of all FTEs)? The same problem refer to toilets is shower space.

Does anyone have an idea or experience what will be the best solution?