Favorite Button:
1- Add "LISTS" view. I am sure other go back and forth to the main lists view.
2- Add "Preferences" view. Another one I go back to quite a bit thanks to the great customizations. When in other views it is serals inputs before able to get to it.
Custom Bottom Tab Buttons
1- If I don't use for example "Day" or "Month" view use these buttons for other quick actions.
LOVE this app!