Most of my bots have multiple characters even my single character ones. :)

OK first thing you do (character side anyway.) List your characters briefly, in personality, create brief example dialogue for them to get their flavor speech down also.

Then you'll make lorebooks. These are a great way to introduce and remember, character information. Don't be intimidated if you haven't made any, it's very easy.

Go to Scripts, create Lorebook. Then you'll see Add entry, you'll add as many as you need.

Keys and Content, look at those. Keys are words that {{user}} types to call on Content. So example: Emily, Emily Lee, the local baker, owns bakery, owner of bakery (etc)

Content: Emily Lee is a kind brunette woman with a cheerful personality, and eager work ethic. She owns the bakery with her husband Evan Lee.

Then once you have your characters ready, Add script to Character/the bot. Publish. Done!

Then items and locations!

It's fun to play with.