Shipping phone number

Hi

Trying to find out how I can add the shipping phone number on the Packing slips (as well as Invoices & Dispatch note). I managed to add [Ph no] but Billing number still showing.

Ideally we need both Billing and Shipping phone number – the first whilst pulling the order should there be any swaps etc., the latter at dispatch to notify/ make arrangement regarding arrival of shipment.

Any ideas to tackle this are welcome – Thank you