Do you allow live surveys editable in real time?

We need a form, that would be a templated, that our virtual assistant's could send via email to potential product sellers for our custom made good marketplace.

The manager would qualify leads first, once qualified, the manager would send an email introducing the "on-boarding specialist" (The V.A) to that seller. The VA would input information already provided in past emails from the manager such as Name/address/pictures etc inside the templated form and anything that was not provided would be left blank and sent to that specific product seller to answer any questions that may be undefined

OR

Edit their live form with JUST the linked to their custom form with no account sign in.

Do you have this functionality, if not, do you have any suggestions what I would research to be able to find this?

It looks like that you are looking for an approval workflow process and to edit the form submissions after submitting the form. Please go through the guide below that can help you with achieving your requirement.

https://www.jotform.com/help/432-A-General-Approach-on-Building-an-Approval-Process-Workflow

Please give it a try and let us know if you need any further assistance. We will be happy to assist you further.