Requires IPS Gallery.
By default, albums in IPS Gallery are set to only be editable and contributed to by the owner of the album. Even if users have moderation abilities for a gallery category, or even if you're the top admin, by default you can't add to an album that is owned by someone else. This plugin removes this per album setting, and sets all new or edited albums to be "public", ie. anyone with permission to upload to the gallery category can now edit and contribute to all of the albums within that category.