Number of times each maintenance activity type (inspection, breakdown, preventive) is maintained at the operation level

Hi Experts

I need help on one of my client reqmt mentioned below.

For the selected equipment from the functional location hierarchy we need to display the number of times each maintenance activity type (inspection, breakdown, preventive) is maintained at the operation level of equipment orders.

Can you please suggest highlevel logic to start working.

Thanks in advance

CHSR