Wing window removal/installation

I looked at the 69 service manual but it didn't say anything about removing just the wing window glass/chrome pivot piece.

Can the wing window glass and chrome pivot piece be removed and installed with the rest of the frame installed in the door? Or does it have to be installed into the door as an assembly? Is there a hole in the inner door structure that allows access to the screw/clip that holds the wing window pivot to the frame?

Reason I ask is that I sent my pivot pieces out to be rechromed. They won't be back for at least 10 weeks. Can I install the frame and side glass into the doors and install the wing window later...or do I need to wait? Thanks