In a Form, Section or Field, you can define actions to be performed when the component is loaded or changed. You can see there are a set of default actions (e.g. "Complete Task" ) or your developer can extend your Forms implementation by creating custom Functions which can be called in an action.

But what is a Function and how do you create one? Functions are generated from existing BAW services or can be created by a developer using the Function editor. The screenshot above shows an example of a function (Retrieve Testing Sites) which finds test sites close to the entered ZIP code.

This function was generated from a BAW service that contains the logic to get the testing sites.