Not everyone in our BOE group was a member of Facebook so we needed another solution. Several of us had DSLR cameras and there were 1000's of photos to share. Due to the amount of storage required for all of these photos, we ended up utilizing Microsoft's OneDrive. I use OneDrive now to backup my personal photos as well as to share heirloom family photos with relatives. Only 15 GB is free for the person who is going to host the share site. It was important to me to share the photos, so I am paying for the extra storage. The charge is per month for the site host, so I believe that you could shut it off and delete the site after a year or so if you want to.
The OneDrive site host can make a folder, share the folder with group members and set the security to Edit (instead of View) so that they can upload their own photos. All share site members need to log in are one of these Microsoft accepted email logins @hotmail.com, @outlook.com, @yahoo.com, or @gmail.com These are all free if there is someone who does not have one of these 4 email account types. Note: I made sub-folders in the shared folder so that those viewing would know whose photo they were looking at. It worked well for our group. I hope that helps.