Build a http schedule/calendar server.

I have had this idea for several years now, and no one has really done this specific application yet. It has an easily defined customer base. It also has a great benefit for the users and it also gives the clients a great tool to offer their existing customers great service. I'm a developer, technician, and sales person. I'm a pro user of some programs but coding is unfortunately not one of my skills. I hope this is a good beginning of information needed for continued discussion. I was thinking that using Node.js is a good path. The product is a HTTP calendar server using Node.js, for clients and their users. A quick view of functions needed; Set up client accounts. Clients pay by monthly invoice. Clients are able to log in to their account, and design one or more unique weekly calendar for their users. Simple design by setting up a static week schedule that rolls every week of the year. Normally it's 2-4 appointments a day. ie 8-12, 12-16, 16-20. Clients are able to assign users or list of users. Clients are able to set rules for their users, how many bookings at once, how many days ahead users can book, also be able to connect the user to a specific calendar or calendars. Users can download a booking application for all platforms or log in on the www. Users are able to log in, view calendar and book or unbook time on their appointed calendar as per the rules set by the client. The server sends a remainder as push notice or mail to the user on a set time before a booked appointment. Kind Regards Per Billengren