The below video will guide you to add panels on the roof:

 

Steps to Add Panels on the roof:

  1. Click Fill Roof under Panel Layout section.
  2. Left click on the side of the roof to add panels.
  3. Select the preferred manufacturer and model from the drop down under Selected Panels.
  4. Click on View advanced options to change additional properties like the Orientation, Alignment, and Inter-row spacing of the panels.
  5. Pick and choose a racking structure from the customized list of Racking Manufacturers.