The specific sales agent that works for the affiliate partner. Received as an affiliate link paramenter "agent" and passed by a cookie on the the home page or a product page using custom code. Then it shows on the list of affiliate referrals under the "description" field so that the affiliates know specifically who referred the sale. This is custom work done in functions.

Do you want to add a set password link inside of the vendor notification that is sent to the customer?

Does the vendor want to send the welcome email? If No, then no welcome email will be sent.

Vendor New Order Email recipient pulled in from Vendor Settings.