You can define how to sort the channels. This is possible within the Favorites view. The order within the other views cannot be changed.
To sort your channels, you first have to set channels as Favorites. Once you have set your Favorites, you can sort them as you wish.
Creating and sorting Favorite channels is possible on any device. Once you have configured your Favorite list to your preferences, it will be applied to all your devices.
Click on your device to learn how to add and sort Favorites: