AND operator to join two Selections in Member Selector

Summary:

We have a requirement to dynamically filter column based on the children of the prompt value.
For e.g.

PROVINCE COMPARISON - ATLANTIC TOTAL — this is the prompt value entered.

Under this parent, we have following children values:

NEW BRUNSWICK Total Broker and Group

NEWFOUNDLAND Total Broker and Group

NOVA SCOTIA Total Broker and Group

PEI Total Broker and Group

We have a fixed section in our Report for different provinces: NEW BRUNSWICK, NEWFOUNDLAND , NOVA SCOTIA and PEI

We need to dynamically select the child hierarchy value in different sections.

Do we have an AND function so that I can join two Selections in the Member Selector ?