Build a online appointment scheduler

The project will consist of 3 modules. The first module is the primary focus and the purpose of this freelancer project. A medical office has a daily calendar, however this calendar is not shared among their referring doctors. The goal is to create a website where the provider can broadcast his calendar. To do so we need to assume the following: 1. We cannot export the data from their local daily calendar to this shared calendar .. therefore entries in their local daily calendar will need to be manually updated into this shared calendar on an finetune basis. As they as maintaining two calendars. Ease of use in blocking time and making time available is critical for adoption of this product in a medical office. 2. Information regarding the booking from their local daily calendar software such as procedure/patient does not need to reflect on this shared calendar. The provider simply needs to click that time slot as unavailable/booked so that viewers of the shared calendar cannot book patients in that time slot. 1. Calendar creation - Using filters to make times available and unavailable is a MUST. In addition, I want the provider to be able to tap on a given time to turn the status available/unavailable. They also need the ability to book an appointment themselves at the given timeslot. Clicking on a time slot should have multiple functionality. 1. make it available 2. make it unavailable 3. provider can create booking There will be a login and username so that provider can login into the admin side of the website.