View activity of teammates during busiest period on Team Performance heatmap

As a Team Manager, I want to be able to view the workload of my team at the busiest periods.

When I tap on the heat map - Active teammates it shows me the number of active teammates. When I tap on this number, it should show me below the activity of those active teammates. )ie messages sent, reply time etc.

this will allow me to understand my teams performance more granularly.