Voting Rule
When a prompt is sent to a single recipient, the result of the prompt is the return value from that recipient's choice. However, when a prompt is sent to multiple recipients, you must select a vote-counting method to determine the result of the prompt and include a Voting Rule parameter in your event action definition.
From the drop-down list, select the voting rule that is to determine the method for counting and evaluating votes from the recipients of the prompt message.
When you click Event Actions form, the system "wraps" your selection within a VOTINGRULE( ) parameter, which yields this final syntax:
to return to theVOTINGRULE( selectedRule )