So there is a wipe tower that is a block that gets printed in the rear of your print bed for the printer to clear the nozzle and then there is wipe to infill where it saves the filament and makes sure that the color change happens during infill. The multi tips will require a servo and specifically bent tin to serve as a cap for each individual nozzle you aren't using. That is the only way to stop the drip completely. Here is an awesome video on the setup of a Prusa MMU2S on a generic 3d printer: https://www.youtube.com/watch?v=nf7TexBAR80