We need this feature to help organize our marketing calendar. With so many marketing channels running through HubSpot, it is great to have visibility into everything on the calendar. However, with multiple teams using the platform, the calendar gets cluttered to the point where it’s no longer usable. There is the option of filtering by campaign, but that creates a manual task of adding new campaigns to a saved calendar view. If we could put all sub-campaigns for a single team under one parent, we could easily filter the calendar view.