RRDI For getting hours submitted in child workitems

I have a workitem that have several "child" in the Links section.

In those child I have submitted hours in the time tracking tab.

I want to know if its possible using RRDI (the solution for custom reporting in the new CLM) that I can search how many hours are being submitted for the specific parent link?

For example :

Parent 1
Child 1.a : 2 hours
Child 1.b : 3 hours

Parent 2
Child 2.a : 3 hours
Child 2.b : 8 hours
Child 2.c : 2 hours

And in the report I will like something like :

Parent 1 : 5 hours
Parent 2 : 13 hours