Give your actions structured names based on Google Analytics event tracking.

Category (required): The name you supply for the group of objects you want to track.
Action (required): A string that is uniquely paired with each category, and commonly used to define the type of user interaction for the web object.
Label (optional): An optional string to provide additional dimensions to the event data.
Value (optional): An integer that you can use to provide numerical data about the user event.

Non-interaction (optional): A boolean that when set true, indicates that the event hit will not be used in bounce-rate calculation.

The most basic version of this follows:
Goal: Website Signup on Homepage
Category: Home
Action: Signup

When we get to the next milestone of this play we'll add this event to your website's signup button.