Are the clips trimmed enough so that there is enough overlap to fit your transition? If I'm remembering correctly, Studio changed in how this is handled in the last few releases.  Andy 

Have you seen this video about Pan and Zoom: https://youtu.be/_dT19T7SY20   Hopefully that is what you need! Andy 

Now the page has changed! It must have got delayed in the Internets ��  Andy   

I refreshed three times to be sure but the page still says  LUT profiles make it easy to instantly add cinema-grade color grading effects to your project. Alter the mood, add drama, and more by choosing from preset profiles or creating and storing your own for later use.  Andy

I don't see any folders selected? The behavior should be that you select one, it does a quick scan to see if there's anything and then makes the Scan& Import button enabled. What happens when you select the folder? Andy     

Just to add to using the manual. Finding things is sometimes tricky but this one would have been found by a simple search in the PDF for ''aspect''. Which is my way of saying don't forget PDFs are searchable!   Andy 

As an FYI, the Picture Grid 9x9 worked fine for me (this is PS 22 though). Rendering got slower as I added each track of course.   Andy 

If you adjust the total duration, the individual clips get proportionally shorter or longer. I wonder if you can put multiple on the timeline, group select them and set their duration and get a result you like?   Andy 

On the very first page, two options: Full or Upgrade and Download or Boxed. Andy 

I did exactly this with 300+ photos, set their duration in one go. Actually multiple times because I kept changing my mind ��. This does work in 22, must be something specific to your project or setup. ��   Andy