Rear Vinyl Trim Removal

Hi,
I'm looking for some info on the rear Vinyl Trim removal. I did a search but not a whole lot shows up. Maybe I didn't type the right keywords in??
I understand how the drip rail and front/rear glass works but I just can't wrap my head around the vinyl trim. I understand there are clips and the leading edges have a visible screw. Do I remove this screw and then slide the trim forward to remove the trim? Or do I have to crawl in the trunk to remove the other side of the fastener and just lift it off the body?

I think part of my misunderstanding is how the clips actually hold on the trim.

Any pictures would be great :)

Thank you.