Greetings, @sales-alwayssafe. I'm here to provide some insights about setting up your employee for mileage tracking in QuickBooks Online with ease.
QBO only allows the primary admin to track mileages. To enable mileage tracking for your employee in QBO, it is advised to grant them admin rights. If your employee isn't a QuickBooks user yet, you can add them as a new user. Then, transfer the primary admin role. Here's how:
Note: As the current admin on the account, you'll lose your access rights once transferred.