Calendar - Filters for the labels on both main and subitems

Hi, it would be great on the calendar to be able to filter the labels on both main and subitems.

For example, we have a number of ‘Items’ and ‘Subitems’ for our team projects and are using Labels to ‘categorize’. We want to filter these so that all the main item labels to show on the calendar but with some of their subitems labels hidden - but at the moment, you cannot filter by Items/subitems separately.