Grades
Name grades in order, e.g. Grade 1, Grade 1 Chapter 1, Grade 1 Chapter 2, then Grade 2… Apps list them in that order automatically.
Upload Video
Videos
Pick a grade to reorder videos. Use ↑↓ for custom order, or auto-sort by Chapter → Part in the title.
Client Users
Users login in the desktop app. They only see videos from assigned grades.