Keep the location feature active and insert the Google Autocomplete API key.
After configuring the “Locations”, click on the Save button to apply the changes to the activity calendars.
If enabled, you need to enter Google Autocomplete API key that you have in order to get location suggestions.
Note: To generate the Google Autocomplete API Key refer to: https://developers.google.com/places/web-service/autocomplete. You can directly navigate to this page from the configuration page by clicking on the available link.