(noob inside)
Hi,
I use the gallery block addon to display a large amount of pictures.
I would like to know if there is a way to sort thumbnails by category.

For example: I have some cars and gardens pictures. I would like to add a "tag" attribute to each pictures, and then the visitor can choose in a tag list in the thumbnails page wich category of pictures to display.

I really need to manage to do this for tomorrow so all advice would be very apreciated