I thought I had the solution that worked for me, but I was using the "Text indent at:" which is for the second line in the paragraph. I was only using a single line, so was seeing improper results for my needs.

For my requirements, my organizations has two criteria.
1) After the auto number, two spaces are required before the beginning of the text
2) The paragraph has to be left indented.

As far as I can tell thru my research, a tab is always calculated from the left edge. The default tab in Word is .5. My auto numbering looks like...

1.1.
1.2.
1.2.1.
1.2.2.
1.3.
1.3.1.
1.3.1.1.

...so that means the default tab of .5 makes the spacing inconsistent between the auto number and the beginning of the paragraph.

I can't find if it's possible to set a tab by style from the end of an auto numbering no matter the level.

Even if antiquated with the two spaces, I can't get around this requirement. I could simply add two spaces after the numbers in the "Enter formatting for number:" box, but I'm going to use cross references to those paragraph numbers within the document. The two spaces will show up in the cross reference.

Any thoughts?