I have a custom character sheet for a table-top game me and my friends made. We've been playing to on roll20 but we've just been using the journal as a character sheet. Recently we made a sheet and I converted it to a pdf with text-boxes. I see in the games settings you can pick from a drop-down of several versions on several D&D Sheets and a lot from other games as well but I was wondering if there is any way I can integrate this custom pdf into roll20?