1963 Dart 170 2 Door Post Resto

Only in a few spots where it wouldn't grab the Sharks teeth. Going to put some along window edge and wrap it around like a lot of other models did for double grab before setting the glass. Have to wait to get the glass setting compound Monday when Napa opens. Only one tube available so hopefully that's enough for 2 glass.
Stupid question, but is the glass setting compound even needed? Do you put it between the glass and seal, or between the seal and the pinch weld.