policies applied to tenant root scope

[ajaynadakuditi]

Hi, We are planning to transition to EPAC. In our management group hierarchy, we have a pseudo root where our policy initiatives are assigned. However, we have few policies that are directly assigned at tenant root. I have few questions:
can we configure tenant root as pacselector?
if we configure pseudo root as pacselector, and the desiredstate strategy is full, what happens to the policies defined at tenant root scope?
what is recommended strategy here?