Dynamic Form

Hi, Thanks for your work on this plugin, it is very useful for the project i’m on right now.
I’m looking to change a form based on session variables.

Is it possible to have a basic form, then add new inputs at a particular line in that form.

Let’s say I always want the following, so I have a form with this information which is displayed on the page.
Name
Email
Address
City
PostalCode

Then at this point depending on the session values I want to dynamically add one or more of the following sets of inputs
Name1
Email1
d.o.b.1

How can I do that? So far when I’ve added dynamic elements they create a new form above my existing form.

Thank you.

https://wordpress.org/plugins/cforms2/