I used a shared "gallery” last year to allow me to share individual games with the parents of my grandson’s little league team. Each game would be a new album in the shared gallery. It worked beautifully. I shared one link at the beginning of the season and could easily add games as they went through the year as albums.
The problem is when wanting to do the same thing this year I realized the gallery link is not unique. In other words it remains the same whenever you enable a shared gallery. Sure, I can change out the albums but anyone who had the link from the previous year would see this year’s pictures. While in the context of Little League it’s probably not a big deal but I could see other applications where this would not be good.
In the image below there should be an additional option to allow you to refresh the gallery link.