You can display directions between two locations over google maps using the direction tab.

Step 1 Go to Add or Edit Map and scroll down to ‘Tabs Settings’ section.

Step 2 Enable ‘Display Directions Tab’ box inside the display tabs.(See screenshot)

Direction-tab

Step 3 Then Save the map and open it in a browser.

Step 4 Assign start location and end location from frontend and click to find direction.
Now you’ll see the following directions tab on the map.

Display Direction Tab

Video Tutorial