Subscription
Base plan and optional modules, put together with your consultant. Changes and cancellation also go through them.
The subscription has a base plan, billed per establishment, and optional modules for those who need them — with no user limit. Your consultant puts the combination and the amount together when you sign up, and it's with them that you change the cycle, add a module or cancel. There is no free tier and no trial: paying is what activates the establishment.