You should be able to access the drop down menu and choose from that list, at least it worked for me (gallery tab>submit to this gallery> new/existing piece>Submitting to: drop down). Let me know if you're still having problems
Hey! Thanks for letting me know, it took a while but I played around with all the admin and group options and finally found out where to turn on the submissions for the different folders to everyone. ;w; Thank you for bringing this problem up and hopefully it's working just fine now.