This tutorial will guide you how to display multiple stores in Google maps in PrestaShop version 1.6. Follow the below given steps.
1. First of all to Preferences > Store contacts:
2. Then add a new store by clicking on add new store button:
3. After that fill as many fields which are possible to fill, as they will displayed to the customers on inside the map. There will be a most important field the longitude & Latitude because PrestaShop will highlight the location on your web store
4. Then to display the store set the status to Yes
5. Then save all the changes to confirm the changes which you have made adding to the store
6. Then check the front-end of your store, you would see that the new store has been added successfully.