I'm not Drespar, but I can answer those questions. (The forum doesn't utilize notifications by @name). The existence of Charactermancer capability is based on sheet choice. If you are using the D&D 5th Edition by Roll20 Sheet, you have the latest version of Charactermancer. IN fact, there's no way to use any previous version of the code. Different systems and sheets have differing levels of Charactermancer functionality, but The official 5e sheet does support multiclassing. The only thing to be careful with is spells, both spells known and slots. Depending on feats, race, class Ability scores, and other factors, Charactermancer can make incorrect judgments. It's best to double-check. You can always make manual corrections; you won't be screwing anything up. Use Level 1 Charactermancer to create the first level only. After you have created the first level character, subsequent changes are made with the Level + Charactermancer, also called Level Up Charactermancer. From here you can choose additional levels, even from different classes.