I believe that I already know the answer but I want to present my doubt to you as a double-check. Turns out I'm working on a CI project that only installed kitchen sinks within the tenant space, the restrooms are located on the core of the building. So if my comprehension of the prerequisite is accurate I would only have to develop the calculations for WEp1 including the kitchen sinks flow, and the rest of the fixtures should be included in WEc1 right?