To implement a complex filter condition combining two simple conditions, just simply click on the <Click here to add> under the existing condition you have just defined.
Suppose we need to select customers whose Company located in Suite 103, US. Apply Addr2 on column box, is equal to on filter operator box and Suite 103 on criteria values box under the existing condition.
Setting filter group operator for the combine conditions, just simply click on the filter group operator box (by default, it specifies AND operator) to activate the appropriate editor.