I have a company that uses 2 salesnames but 1 acounting

Now I want to add to the prints buttons of Sales order/ Quotation, Shipping and Invoice a second print option.

With the first option I use the template of company 1 and with the second the template of company 2. I have followed the tutorial: multiple invoice layout step by step but is is not working. I use Versie 7.0-20140218-002620.

Is somebody able to give me step by step an how to?