I can't see a "how to use the Knot" board and the Help sections aren't helping me. So I imagine there's a number of ways to do this- getting them to sign up with the site and maybe I can give certain accounts access? Or giving them my login and password (less comfortable with that as I don't know if more than one person can login as the same person at once, is that a TOS violation?) maybe.
What's worked for you? I want some people to have access to my budget and to see my favorites, things like that.