The main use of field rules is to define drillthroughs and URL links at a data source level. For example, you can do the following:
How do I customize field rules?
Navigate to the data source you want to define the rule against on the Home page. Click on Configuration, then click on Field Rules.
How do I define a field rule?
Click on Add Rule on the Field Rules window. Clicking on this button will pop up a window which enables you to define a rule of the form:
if (field matches this criteria) (perform this action on the field) (details of the action)
Available criteria are:
Available actions are: