To set a member variable filter:
In the data layout, double-click the item you want to define as a member filter.
Select the method for retrieving items from the database from the Operator Type list.
The selections shown on this list depend on the database to which you are connected. See Operator Types and Data Operators.
Select the member(s) that you want to define as a variable filter in the Members field.
Move the member(s) as a variable filter to the Applied Filters list and click OK.