As per the request from @david in his original post above, “to keep fields common”, and that I asked for SweatRate and SodiumLoss to be added to the custom wellness fields, I’ve added them as follows:
It will appear on the calendar as follows (black water drop and 1.5L/Hr:
I’ve referenced the TrainingPeaks article on how to calculate it, but it’s also included in the Excel file that can be downloaded in the APP for Excel section.