Each time you add a rule to a zone, it is placed at the bottom of the rule stack. The rule stack is the list of rules in the zone. The order of the rules in the rule stack indicates their relative priority—the highest priority rule is first in the list (at the top) and the lowest priority rule is at the bottom of the list.
To raise or lower the priority of a rule within the rule stack of a zone:
Right-click on the rule in the zone and select one of the move functions from the context menu:
Increase Priority — moves the rule up one position in the list
Decrease Priority — moves the rule up one position in the list
Move to Top — move the rule to the top of the list
Move to Bottom — moves the rule to the bottom of the list
NOTE: The prioritization (move) functions only apply to the position of the selected rule in the current zone of the current operation set. The rule stack of each zone is prioritized independently of all other zones and all other operations sets.
Some rules are designed to work best when applied at the top or bottom of the rule stack, so pay special attention when prioritization of a rule is discussed in that rule's description later in this chapter. For example, Induced Surcharge rules should be placed at the top of the rule stack and Tandem rules should be at the bottom.
