Using prepopulate app and pass field value to another form

Found this app on your forums http://prepopulate.jotform.io/

Is there a way to set it up so that non-users can use this method? I.e. a sales member fills out a form (the quote) and sends the link to their client (the prepopulated form with a payment widget)?

Is it possible to set it up so that only the fields that need to be transferred are transferred so that the second form can be used like an invoice?

Sales Member End: https://form.jotform.com/60242430253139

Client End (Viewing and payment only): https://form.jotform.com/60148282948160

Any tips or maybe a walkthrough would be appreciated. Banging my head against the wall. I feel like I'm missing something so simple.

Unfortunately, the prepopulate app does not support guest mode. You have to have a JotForm account to use it. However, you can still prepopulate the form by constructing the URL parameters manually. Here's a guide for that: http://www.jotform.com/help/71-Prepopulating-the-fields-to-your-JotForm-via-URL-parameters

If you want to pass a field value from one form to another (without using the prepopulate app), use this guide. http://www.jotform.com/answers/234352

Hope this helps!