When adding additional categories they do not merge alphabetically they go all the way to the bottom below the last category added. The only way to do this right now is to drag and drop it into location either on the unit itself or on your desk top on the admin. side. Unfortunately it is not the most user friendly thing to do. It takes forever. It would be nice to have a command to let you either reshuffle new categories in with existing in alpha order or have you click on the new ones to integrate in alpabetical order.