I'm glad to hear from you today, wadekmattingly. Allow me to share some information about how location tracking works in QuickBooks Online.
Yes, you'll need to manually enter the 2 locations since the option to create rules is currently unavailable in QuickBooks Online.
You can take a look at the following pointers below to know more about this feature. The links will provide you steps from setting up to pulling up reports to review your transactions with locatios:
Get started with class tracking in QuickBooks Online.
Set up and use location tracking.
While this feature isn’t in our development roadmap right now, we are working on big improvements that will be helpful for the majority of our customers, and you’ll see those rolling out soon through our QuickBooks Blog.
If I can be of help while working in QuickBooks, please let me know. I'm always here to keep helping. Have a good one!