I would like to breakdown a dimension with another dimension, however, by default, this only shows five rows in the breakdown. Any way to increase this limit of 5 to more number of rows and set that as constant instead of increasing rows for all tables in the workspace?

You've got a Recipient Unique Open under the indicators element of the delivery. 

Hi Shine,   You can check this documentation: WhatsApp API - How to use the WhatsApp Chat API - CloudRail   Thanks, Akshay