1. First select Services and then, where Foursquare is listed, click Add.
2. Select the Foursquare option you want to set up a service for. In this example, I'm going to set up a Foursquare Page service.
3. If you're already logged into a Google account set to manage a Foursquare page, you'll be directed to the following window. Otherwise, please log into the appropriate Google account and accept any permissions requested.
4. You can then provide a description for the Foursquare service, select a Foursquare Venue from the Managed Venues dropdown list and select whether or not you want to receive alerts for new activity and where these should be added such as the Priority Inbox. Once you're happy with your settings, click the Save Settings button.