Move Outlook for Mac data to archive?

After being an Outlook for PC user since forever, this is my fist attempt at moving my current Outlook for Mac to archive.

Usually on PC I can rename my current Outlook file to BU_yyyymmdd.

Then create a new outlook data file with nothing in it.

Then setup my email accounts.

Then open my BU yyyymmdd as an archive.

This is super easy and super fast.

I've already gone thru the steps of backing up my Outlook for Mac data files.

How do I create a new Outlook for Mac data file.

Question about Outlook Express