If you wish to add more licenses to your existing account, you can easily do so by ordering your subscription online.
Steps
Log in to your Detrack account and click on Account > Billing.
In the filter, select Detrack.
Click Subscribe Now button for the plan you wish to subscribe.
Add more drivers (if required) by changing the quantity of the subscription.
Click Checkout.
Enter your billing information.
Select the payment method (Paypal or Credit Card).
Check the box I have read and agree to the Terms of Use.Click Confirm Payment.
The purchased license will be added to the dashboard to add more vehicles.
Refer to pricing.