As in clusters Yandex Maps to determine the number of tags caught in each cluster?

Good day! I'm trying to configure Jakarta, it will be quite a large number of objects, but in a specific city should not be more than 5 marks. How do I tell the user that in this city "no seats"(i.e. there are already 5 objects in the cluster/region) , you need to either change the label style on this condition or baluns to labeling.
How to implement it?