Front windshield

well i got my old windshield out, new windshield, gasket and clips came today. i still have to get the sealer/bedding stuff. a friend of a friend works for a glass company and is going to install it for me for a wopping $60.

i saw a video of..yes..a mustang... windshield getting installed and the way it goes in looks identical to my dart but the guy used no sealer,

is the sealer supposed to be used where the windshield goes into the gasket, or where the gasket goes over the pinch weld, or really no sealer at all? just curious.