Preset Labels for specific Sub-Category(s)

Hi devs,
There is a new user need for this app called “Pre-set Labeling”. The app allows 2 levels of Category - Main & Sub, which are really useful. However, truly Pro financial Professionals need a 3rd Level in the name of Labeling, which is a feature the app has already allowed.
However, Labeling is missing “Automation”! I want a specific category and its subcategory to always have 1+ specific Label(s) every time I key in a transaction having that sub-category.
This is really useful for Budgeting because a user will need to filter all Label that has #LivingCost. Keying that hastag in every transaction (especially Groceries list) is painful.
Pls consider this new feature for development and implementation. Maybe in the Settings inside the app, user can Pre-set what Labels for each Category or its Subcategory to avoid retyping in every transaction.
Regards,
Cognizant Warrior