Calendar & Meetings Scheduling App

We are a roofing company based in New York and we require the following app built to improve our current workflow and scheduling system: • Python/Django web app with Vue.js front end. Base app framework already in place, developer needs to be able to build upon the existing app framework. • As a web app it will run from user's web browsers, so must scale to all screen sizes (Desktop, Tablet and Mobile). • Calendar system needs to be flexible and be able to take entries and assignments aside from meetings. • Only some team members (users) will be able to be assigned to bookings/meetings, so a user needs a simple user role system. If they are part of the Sales role then they can be assigned to bookings for estimates. Every user should be able to use the scheduling system and input their own calendar events though. • Need to be able to input a booking for a meeting on one Vue.js form. • Needs to be able to automatically assign anywhere from 1 to multiple sales team members to the estimate booking, once every possible sales team member is booked for a time slot, no more bookings can be taken in that time slot. • We do need to be able to reassign the booking to another sales tea, member if necessary. • Team members are automatically assigned to these bookings based on a simple priority/ranking system. • Each individual team member can see their own bookings schedule, but back at the office, the person taking the bookings and the admins need to be able to see an overview of all team member schedules. It would be nice to also be able to see a map with the location of all the day's bookings marked with a colored pin. The pin should be color coded based on a preference setting attached to the assigned user / team member. • Each booking/meeting will have a date & time, name, location (street address) and a description of what the person booking the meeting requires. • We are a construction company, so it will be roofing/siding/guttering and things like that. This can just be a simple description text field for now. • Possible booking times need to be editable, but we currently do bookings between 9am-5pm, Monday-Saturday (not Sunday). • We need to be able to block off chunks of time that a team member cannot take a booking or enter in dummy events/bookings into the calendar to mark them as busy. • Each booking will begin either on the hour or half past the hour. • Each booking will block off a whole hour from the team member's schedule to give them sufficient time to travel between bookings in the area. We need to be able to specify an additional app-wide buffer of time between bookings in case we find this is still not sufficient time to travel between each booking. • After the meeting is booked from the booking page this info will be stored to the database and the calendar/scheduling system will draw its info from that. • We do not want to use Google Calendar for any of this as we have had issues with its notification system in the past. • When a booking is placed, we want to be able to send an email notification and an SMS text notification to both the client and the team member taking the booking. • We also need to be able to send a reminder/confirmation notification at a specified time before the appointment. An hour or so before the appointment, an email and SMS notification should be automatically sent to the client and also the team member assigned to the meeting. • We need to be able to prevent bookings being too last minute with a buffer zone between when the booking is made and when the meeting will actually take place. • We only want to take bookings up to a month in advance, we don't want to be taking bookings for months or years ahead. • Based on the street address of the meeting, it would be nice if the assigned team member can view a map to the destination from Google Maps and be able to easily click through to get directions. Attached images as examples of possible implementations of certain features.