When adding items to a list, AnyList will automatically place items that haven’t previously been assigned to a category in that list into the default category.
On the Lists screen, tap the List Settings button next to the list for which you want to set a default category.
Tap the Categories row.
(Note: If category sets are enabled for this list, tap the Category Sets row and then tap on the category set you wish to edit).
Tap the Default Category row.
Select a new default category for this list.
You can remove the Other category from the list if desired.