I want to add customer code to a quotation. How do I do this?

When generating a quote the template shows the quote number but not the costumer code. I want my quotes to have the following format


0000 (customer code/ID)

0000 (sequential number of invoices for that customer)

For example, if they have customer code 250 and it's the 5th quote I am sending to them I want the quote number to read as:

0250-0005 on the quotation document (not just 0005)

Thank you in advance.