Rear top moulding replacement

I have a leak into the back seats and tire well of my 2017 Prius. I'm not sure if this is the culprit, but I found that the plastic tinted moulding panel that fits between rear glass and roof was loose and not fitting tightly against the roof. A few of the plastic clips attaching it to the metal studs were broken and it came off easily when I gently pried it up to inspect.
I've ordered a replacement panel but I have no idea how to install it since the original studs remain firmly attached into the roof and the new panel has C-clips that face different directions.
Any suggestions on how to install the replacement panel? I've found no help looking for video how-tos. Thanks!