Hi - I'm using the Option 2 - Prescriptive Approach for this credit, and I'm running into a few issues regarding the provided Excel spreadsheet. In a few of our rooms, we have regular height windows and clerestory windows, both of which have different Tvis values. In the spreadsheet they only allow you to have one Tvis value per room. Is there a way to work around this? Should I divide up the room into two different ones? Suggestions welcome.