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Go to the 'Coverage' tab.
Enter the first requirement type which you assume will be the parent.
Enter you second requirement type,
Click on ‘Build Coverage report’.
The results will allow you to check cases where your first requirement type is a parent of the other, or a child, with which relationships. You’ll also have a graphical view of those relationships.
In the example below, you can see in the first box cases where all Business requirements are parent of Functional requirements.
3 out 4 Business Requirements are parent of at least one Functional Requirement with the relationship ‘Refines’.
1 Business Requirement is not a parent of any functional requirements
In the second box, you can see there are no Business requirements which are children of Functional requirements.
The graph helps you to visualize when you have multiple relationships from one requirement type to the other.