You go in, head up to your 3rd floor (I believe) after which explain to the receptionist what you wish and he or she gives you the shape to fill out. Given that I wasn’t driving, I received the lovely (insert eye-roll in this article) career of the navigator – https://srilankarentatuktuk20628.blogs100.com/23917151/the-definitive-guide-to-tuk-tuk-sri-lanka