URL Referral tag and System Prompt

Question about referral tags and the system prompt. I work with referral partners and each has a custom tag at the end of my URL (?ref=lender_jim_smith). Currently, if a user types ‘Jim sent me”, the chat will lock into Partner Exclusive Mode and will not mention or refer other competing people or companies to my referral partner.

The chat recognizes the URL tag and does recognize the partner name, but I am trying to get it to acknowledge that partner in the very first message and lock into Partner Exclusive Mode without the user having to type ‘Jim sent me’.

I want it to reply to the very first question a user types and say ‘Absolutely-I see you came here through my partner Jim Smith from XYZ Bank, I will keep everything exclusive to Jim’. Then I want to to finish the answer to the question and lock into Partner Exclusive Mode.

How can I achieve this?

Thanks!