First, you would have to use a Multi-Catagory Schedule to begin. This will only let you schedule parameters that are common to at least both catagories, and possible, common to ALL catagories. You would then have to create shared parameters, that would be applied to multiple catagories, including one to filter out all but doors and windows, then add the parameters (shared) into the shcedule. Usually, this turns out to be more work than the combination is worth. My advise is don't combine those schedules.
Scott Womack