Rule Groups
Rule groups act as parenthesis in a mathematical expression. A rule group is evaluated as a whole and the result is applied to the next rule or rule group in the expression.
Keep certain rules grouped together.

Contain multiple rules evaluated by AND and OR relationships.

Only available in Intermediate and Advanced modes.

Can be nested as deeply as you like.

Added by selecting and then selecting "Rule Group" from the drop down sheet. Can also add by selecting located above the list.
The entire rule group must evaluate to TRUE for the file to be included or excluded.