Change author of an email

Your software
My Mautic version is: 2.16.3
My PHP version is: 7.3.20

My problem is:
I"m new on Mautic and I thought my problem was easy to resolve but … not really :
It’s simple, I have made a form in Mautic with differents fields (name, mail etc.). When someone fill the form, it’s ok i have all the data in Mautic. But my goal is to send the results to an other email adress to activate a promotionnal code, and the sender must be the email adress of the person who filled the form.
For exemple : John complete the form field with his email adresse “” —> submit form —> an email is sending to “” and the sender is “”.

That’s the big problem for me. I don’t know how to replace “no-reply@[…]” by the value of the e-mail field from the form.

Steps I have tried to fix the problem:

I looked for information with plugins or php but i’m very knew on Mautic so i dont have any idea how to resolve this question.

If someone could help me !

Thank You.