<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>This my first request so please inform me if I am proceeding incorrectly.<br><br>I'm trying to put a partial roof n lower shell. I think I should create a roof on the relevant plenum space with a new polygon. My problem is getting started. I can't find a location to create the roof. What is the first step? Should I do something iin the Wizards?<br><br>Thank you,<br>Craig Scaperotta<br></div></body></html>