Open Google Photos
Tap on Albums at screen bottom
Tap on + New album box
Add a title. Tap Done
Tap on + Select photos
Tap corner of photos to add check marks for those you want to add. Tap Add.
You’ll return to the Album summary page where you can add more photos if you’d like by clicking the [+] photo icon
Click the forward icon and tap Create link
You now have a share link for this new album that can be added to a collection in Collectionaire.