Enter whatever you know. All three macros gives calories; calories plus a split gives grams; calories plus bodyweight gives a suggested split.
Fizzy drinks, treats and empty calories are counted from what you log. Custom counters you tick yourself.
The four defaults suit most people. Change them if your day looks different — meals already logged keep the name they were saved under.
Counts toward your calories for the day, but isn't given a meal score — there's nothing useful to say about the macro split of a tea.