The first one is to delay all events until a threshold number of events has been delayed, for example, delay 900 events. This rule is similar to the Number of Events rule.

The second variation of the combination rule is to delay all events until the accumulated total of an event attribute reaches an operator configurable value - for example, total price equals a threshold value.

The third variation of the combination rule is optional, and can be combined with one of the first two variations. This rule allows the operator to define which events are accumulated. Events are identified by an event attribute that holds a specific value, for example, delay 100 events whose PartnerCode attribute is 147, or delay all events whose PartnerCode attribute is 147, until their Total price equals 10,000.

By-event rule.

This rule is used to re-group events. The rule groups events by an operator-selected event attribute. The size of the groups can be specified by another event attribute.