Stick to the roof panel manufacturer’s recommendations for screw placement around the panels. Some producers need you to travel fasteners specifically in the ribs, some want the screws from the flat. Stick to required fastening patterns for every community codes in hurricane zone parts. Per the FCC (Federal Communications Fee), https://www.hotfrog.com/company/72661248012df0f752d090a2fc77cd42/advanced-roofing-inc/yorkville/business-organizations