In PR3, I was assigned to describe the purpose of our system in the introduction and user interfaces in the external interface requirement’s part. Then, I was in charge to do the use case Manage Student List where the teacher manages the student data in a class. The detailed description of the components and the user interface design follows the use case that I have been assign before so that it easier for the group to keep the consistency of the plan. I had discussed in my group via Google Meet several times to ask for their opinion and brainstorm. Every time I complete any part, I ask their opinion whether my work is acceptable or not.