Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Best you can do is get the latest beta build for office, or both office and windows if you can, and stay up to date.
I've found no source for the PowerPoint registry, but if you copy the tweaks from the sites in my post and just replace word for PowerPoint it miiiight just work (look at the registry route and value, pay special attention to the capitalization).
Good luck, and do report back if it works!
As far as my progress, I've written a text file that updates the registry to set office to beta channel, adds keys like the ones I shared for all of the apps from Microsoft's announcements, and triggers an update.
Hopefully I can convince my IT guy to run it, as my work computer is currently my main computer.