Sales Person Contact Data on Quotation

Hi ERPNext/Frappe Community,

i am new to ERPNext and just started evaluating the software to use it for a business which has not ERP at all up to now.

My first customization are made to the Quotation Print Layouts.
I want to connect a Quotation to a Sales Person and want to show the name, email and mobile on the quotation.
I could find some documentation, where its implemented for the sales invoice but not for quotations.

What do i have to do in order to achive this?

Thank you very much in advance.