Hello:
I'm not absolutelly sure about what do you want. I supose that in the controller that recibes your registration form (for instance RegistrationController) you want to redirect to two Action (said A and B) depending on the state of a check in the form.
In that case you can do something like this:
public class RegistrationController:Controller
{
...
public ActionResult ProcessForm(ModelX data)
{
...
if (the_user_have_made_clik_in_x)
return RedirectToActionPermanent("A", "Registration", data);
else
return return RedirectToActionPermanent("B", "Registration", data);
}
public ActionResult A(ModelX data)
{
...
}
public ActionResult B(ModelX data)
{
...
}
}