When you enter the immigration hall, keep the immigration form filled and at hand (you might get the form on plane).

From the doorway you go straight across to the e-visa hall. Your photo is taken and fingers dabbed electronically.

From there you go down stairs to luggage carousel then through customs.

At departure, you will have to show your passport at airport terminal entrance, scan your luggage, but only before your check-in opens.

After check-in, pass through security (make sure you have a tag on ALL hand luggage). Then proceed upstairs to immigration and through to departure hall.