django project for teacher and students

I am working in django project which is a web application includes (the admin, teachers, students, lessons and activities). The idea is to enable teachers to add students and create lessons in a specific way that based on a research, then add activities for these created lessons. Moreover, the teacher can add these lessons and activities to his students. For the admin, he is supposed to be able to approve or deny a teacher’s signup request and to view all the lessons and the students that are related to each teacher. The project is 70% done but i have some problems in the following: 1- Many to many relationship: because i want the teacher able to add a specific lesson to a specific group of students that he can choose (not all his students). 2- Student homepage: because i want the homepage for each student to include the lessons that the teacher has added for him (not all the lessons of his teacher). 3- The activities for the students: i have already made the teacher enable to add activities to any lesson (true/false questions and multiple choices questions), but i do not know how to view these questions for students in a way of forms that include radio buttons. Moreover, i want to calculate the time taken from the student in each lesson and activity separately and retrieve these calculations to his teacher’s page. 4- The admin homepage: because i want the registrations of the teaches not be done until the admin approve the request. 5- Lesson creation: because i want to provide only "bold" option to edit the text of the textField for the text content of the lesson. All text editors that i have tried (such as summernote and ckeditor) provide a lot of options (bold, italic,...) while i need only bold. and i need some adjustments for the way of viewing the lesson. Notes: 1- The version of django that i am using is 3.0.6 and Python 3.8.3 2- The web application is in Arabic language, but i can translate anything if needed.