When you get off the plane, you enter the general terminal on the left (in principle, the whole crowd goes there) and to the left of the entrance is a business class. There you give 50$ and a passport. And they do all the paperwork themselves and bring your luggage. Tea, coffee, water, cookies are offered while you wait. If through business, then clearly. The assessment is purely business class. And I wouldn't go into the general one.....
A solid two, but for Africa it will do, there is even luggage packing, but there is no clear relationship between staff and passengers, it is difficult for a beginner to navigate, it is very hot, but when you need to fly there is no choice.