How do I append customer number to invoice number?

How do I append customer number to invoice number?

New Zoho Books customer using the free trial and trying to figure out how to append the customer number to the invoice number.

For example, my customer number is: ACME

My current invoice number is: 24-XXX

I would like my invoice number to be: ACME-24-XXXX

Thank you in advance for your assistance.