On Sat, 9 Sep 2017 15:03:04 +1200, Your Name wrote:

Is there a button to convert fonts to bitmap in PowerPoint?

Nope. No button. You'd need to use a graphics application such as
Photoshop, GraphicConverter, etc. to create the image, and then import
that into PowerPoint.

Thanks. I was afraid of that answer.

The goal is only these two questions to be answered:
1. Technical (how do I embed the Roadgeek TT font in PowerPoint?)
2. Legal (what am I supposed to do for copyright stuff?

We have the second question answered already for Mac & Windows users.
And we have the first question answered already for Windows users.

Mac experts are needed now to answer the first question for the Mac.

OR,
you could type the text into PowerPoint as normal, so that it remains
editable. Then when the slides no longer need changing, take
screenshots and then delete the text and replace with the cropped
screenshot.

The requirement is for editing by both Mac and Windows PPT users.

The only still-open question of the two posed in the OP is how to embed the
Roadgeek 2005 True-Type font into a Mac PowerPoint application given this
is the warning that I found when I searched how Mac users embed fonts.

"Mac versions of PowerPoint can't embed fonts or use fonts that have been
embedded by a Windows version of PowerPoint."
http://www.pptfaq.com/FAQ00076_Embedding_fonts.htm

Does anyone on this ng have a Mac to test if fonts can be embedded in PPT?