In the Smartrak Map
Hover over the location you wish to dispatch to the Garmin
Right click on the location (opens the right click menu)
Select the vehicle you wish to dispatch the location to (only vehicles with Garmins connected to the system will be available to select)
Check the address is correct and then click on Dispatch Location
The location will then be delivered to the Garmin and the driver will just need to open the message on the Garmin and chose to be routed to that location