I'm not a lawyer - I took something from https://www.docracy.com and made a couple small mods. FWIW, I'd put this up as an MVP at https://mutualndas.com but... didn't want to shill here in the main post. I may update/revisit this in the future, but it was sort of a 'scratch my own itch' issue, and I've used it a few times in the last year.