I have a content type with some custom fields, and I would like to have a gallery in it, with the images grouped into predefined "categories" - like a "subgallery".
For example, I have a "building" content type, and I would like to categorize the photos of it depending on of which part of the building (house) these photos were made or if they are simply archive photos, etc.: you can think of categories e.g. like "Inside", "Outside", "Archive", "Misc."
I made a drawing to make it clearer:
What would be the best way to solve this problem?
Thanks for any kind of ideas!
Ask if anything is unclear.