Best way to get a shared gallery between users ?

Hi,

I am building a website for an association. One part will be private to some members so that they can exchange and share files. The aim is to built a gallery with all the files the association is creating during its yearly exercise.
The members change every year so we want to keep archives and files in a common gallery for easy passing of information.
Using the CB Gallery from what I understand each member has its own. We can give access to other members to a profile gallery but we can't have a direct access from each user profile. Is that correct ? Is there a way to allow a direct access to some members to the same gallery ?
Using CB groupjive / group there is no possibility to create folders and organise the files.

Maybe I am overlooking a better way to do that (so many possibilities with CB...).
Thanks for your advise.

Use a Joomla gallery extension and allow all your users to upload to it. CB Gallery only allows CB moderators and the profile owner to upload to a users gallery. We have nothing to provide a shared gallery as it does not make sense to CB.