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Business Rules are executed when the form/flow loads and when a control's value that the rule depends on changes. If you want your rule to run Only when the form loads - check the Initialization Only checkbox at the top of the wizard. You may want some business logic to execute before the form/flow displays and users begin interacting with it.loads and when a control's value that the rule depends on changes. If you want your rule to run Only when the form loads - check the Initialization Only checkbox at the top of the wizard. 

(need good example) - 

Rule Builder Wizards

The Rule Builder walks you thru three easy step steps to define your condition and actions.

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Describe the conditions under which a set of actions should be executed. You can specify more than one condition in the same rule but you do not need a condition. 

Each condition consists of the following:

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