How to limit what directory contents are offered in a collection. (photos, activity)

Good Morning all.

I’m looking for a way to exclude some directories from being added to the automatic collections. Example, recently updated, photos.

To put it another way, how would I exclude the InstantUpload folder from the generic “Photos” link.

Or if I have an archive/work in progress folder, I might want to exclude that entire directory tree from the “files” link.

Are we looking at creating a separate account and using a shared resource as archival or work-in-progress storage?