A customer pointed out a nice HarmonyPSA configuration the other day; using Harmony to help you show directions to a customer's addres.
This is achieved using the Dynamic Tags functionality.
If you go to Finance > Setup > System > Dynamic Hyperlinks:
Now add a link as follows:
When you view a customer you should now see that if you click on the link icon in the top right, you have menu item to find directions!
Click on it and voila!