I haven't roleplayed on IF boards in a couple years and now I'm rebuilding my board and I have a bunch of canon characters that are open and I want to put them into a folder, but I honestly have no clue on how to make a folder. Can someone please help me out?

I'm a little confused as to what you mean by folder, could you specify?
Perhaps you're referring to a sub forum? With a little more information,
we'll be better equipped to help you poppet and potentially talk you
through the process :)

If its a sub forum this is what you need to do:

CREATE NEW FORUM - use the drop down, and put that forum INSIDE the other forum.

Once thats done - go to the canon post at the bottom is a MODERATION drop down, click it - MOVE FORUM - select the forum you just created - and then BAM! You're golden :)

Thanks SO MUCH for the help! It was a sub forum that I needed to create!