Hi Joe!
In QuickBooks Self-Employed, we can record mileage from point A to point B, not a round trip. If you need need to track a round trip, you can track mileage from point A to point B, then point B to point A.
On the other hand, it would be best if you can get advice from your accountant or IRS whether you need to record the round trip or just the starting location to your work location portion of your entire trip.
By the way, if you'd like to see some references for QuickBooks Self-Employed, you can check out this link: https://quickbooks.intuit.com/learn-support/. Then, change the Topics for to QuickBooks Self-Employed.
Feel free to reach out if you have other questions about tracking trips.