door /window seal - when/how to fit?

[magpies]

I'm about to rebuild the empty but fitted doors. I can work out how to fit the window mechanism etc. but I've purchased new window seals and don't know if I need to fit them before or after the window. Also what is the best glue to use?

[magpies]

yeah I also have the U shape ones for the channel

I'll get some NMN from Screwfix tomorrow - I also need some st st fixings for the channels to body