Add two features to a simple web application

We need minor modification on a ready and working back-end and front-end project.

Back-end: Python
Front-end: Html+Java Script


We want to add couple of features to the system
Authentication then multiple user can log in and use the system.
A simple task assigning feature to the users

There are two types of users:
Admin:
Provision to assign tasks, view status of tasks and view reports of all tutors. Tasks include selecting tutors and giving the tutor information about the student(phone number, subject of concern, a date before the task is expected to be completed).
Tutor:
Tutor should have the provision to view all tasks assigned to them, call students via the Twilio functionality, change the status of the task( move task to closed when done), generate a report of call.

The existing system’s code will be provided. It’s a very clean code.

Job time estimate: ~10-13 hours hours

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The existing code does the following:
- With this code, call can be made from browser to phone number using Twilio APIs
- Call can be received to the browser from phone number
- Code has three modal screens
+Enter phone number modal
+Calling to a number modal
+Receiving call modal