At the top of your dashboard, click the module access icon > Administration > Transport > Set Routes to open the Route Details page.
  1. In the top right, click the Add Route button to open the Add New Route page.

                                                                   Fig 1.

  1. In the Destination field, enter the name of the last stop.

  2. In the Cost field, enter the fee to be paid if the drop-off point for a student or employee is the last stop.

  3. In the Main Route field, select the New Main Route option.

  4. Click the Save button.

Even a subroute can be added for the main route. For detailed description you can refer to the subsequent link:

For more clarification, please watch this.