You should be using the form wizard in Chronoforms. You don't need to put anything in the action, it will do it for you. There is a tutorial for how to make a Chronoforms registration form here - http://www.chronoengine.com/component/rokdownloads/51-4-building-a-joomla-registration-form-using-chronoforms.html
I am new to Joomla. I have the basic set up and also did some modifications to my registration form. I wanted to know, how can I add a new form from scratch in Joomla.
I tried using the chronoform extension, but couldnt figure out what action to put for the form. Can anyone tell me how the routing works in Joomla.