how to solve this question using gRPC in ballerina?

In this problem, we wish to design and build components of an assessment management system using gRPC. The system has three user profiles: learner, administrator and assessor. Note that each user should have a unique identifier in the system. A learner registers for courses, submits assignments for each assessment of each course he/she registered for, and finally checks his/her result. An administrator adds new courses and sets the number of assessments for each course and the assessment weights. He/she also assigns assessors to each course. Finally, an assessor allocated for a course assesses the assignments submitted.