Yes please! I was a bit perplexed when I noticed you couldn't do that. It seems like a very basic feature we should have!
I'd really like an option to put a single character in two folders, like if a character has a feral and an anthro form, or something like that.
+1 !!! When I first joined I thought this was a thing and was utterly disappointed when I found out you couldn't do that ;-;