The trip reasons for mileage is very limited, can you manually add other trip reasons?

Hi justalittlesquee,

Welcome to Community!  With QuickBooks Online Mileage, you're able to track your business miles and vehicle expenses effortlessly.  At this time, there isn't a way to enter additional reasons for mileage tracking.  However, if you'd like to see the option moving forward, you can submit a suggestion to our Development Team.  Customer recommendations are greatly appreciated for improving your overall customer experience with QuickBooks Onlilne.

If you have any other questions, please feel free to reach back out, we're always happy to assist!