I have created (as the site admin) several categories and albums within them, and I want the Registered users ONLY to upload into these predetermined Categories and Albums I have created.. How do I achieve this?
Album properties (http://coppermine-gallery.net/demo/cpg14x/docs/index.htm#album_prop), "visitors can upload" = yes.
General toggle: groups panel (http://coppermine-gallery.net/demo/cpg14x/docs/index.htm#group_cp), set "Public albums upload" to "yes" for the registered group.