Settings >  Locations list geolocation presets. You can use these presets to override geolocation in Chrome. You can also populate the list with your own preset that you use frequently.
To add a custom preset:
- Open Settings.
- In the Locations tab, click Add location.
- Specify the following values for the new entry. For example, let's add New York as a new location. - Location name: New York.
- Latitude: 40.72403285608484.
- Longitude: -73.94397543423175.
- Timezone ID: America/New_Yorkas defined in the latest release of the Time Zone Database.
- Locale: en-USas defined by BCP47.
 
- Location name: 
- Click Save. Now you can select this preset from the Sensors > Location drop-down list. 
To edit or remove an existing preset, click  or 
 buttons that appear on hover.