Photo albums in invite-only groups - restrict who can Add Photos

Hi,

In our invite-only groups we've restricted permission such that only group admin is allowed to post in the group. Recently upgraded to ES 1.4.4. We notice that for photo albums in groups [invite only in this case] any group member is allowed to "Add Photos" to any album, even if the member is not the creator the album.

Can you pls. suggest a solution on how we restrict "Add Photos" permission such that only the creator of photo album or group admin can add photos to the album in groups [or event otherwise].

Thanks.