Company details on tax ivoice

Good day

How can I amend the tax invoice company details, where I can show the company and customer VAT number?

Method 1: You can add the VAT number to the Customer address field
Method 2: Create a Custom field for the VAT number and select Show CF on printed documents and Show at top of printed documents. See below:

I just added the tax number to the address field (Method 1 from @AJD )
CUSEDIT

To give me