Roof specifications are typically set in the Envelope area. But for those looking for more control at the Zone level, you can determine Zone specific Roofs.
Add a Zone specific Roof by selecting the Zone and navigating to the 'Zone Roof' button. Next, select 'Select Top Roof', and you can either select 'As Concept', 'From Design' or 'From Template'. Select 'From Template' and a prebuilt Template from any supplier. Give your template a title and click '+ Add'.