Hello Ian M
Hi, I'm Karl and will be happy to help you today.
First, ignore anything related to adding a password to a PST file unless you seriously want to have one. Aside from that, following the steps below, you won't be faces with anything related to a adding a password to a newly created PST file
To add a new PST file to Outlook, it is done via
From the Home ribbon, click on
#1 - "New Items" --> #2 - "More Items" --> #3 - select Outlook data file #4 - (you can keep the default file name / folder or select your own for each
All done
If you have any questions, don't hesitate to ask, we're here to help you further if needed.