What is the best way to do a Joker exchange?

Q) What is the best way to do a Joker exchange?

A) You should say that you are exchanging for a Joker. Next…show that player the replacement tile and wait for the Joker to be handed to you. When you receive the Joker then you should hand that player the replacement tile to put up on their rack. Never grab or touch another players rack. It’s a matter of common courtesy.