Naturally, you also have to be logged in with your Google account and go through the authorization process. To install the Google Calendar extension, you need to navigate to the respective Chrome Store entry in the host application and press the “Add to Chrome” button. Review your upcoming schedule from the comfort of your Chrome bar The add-on is able to work with your Google account but keep in mind that you will have to authorize the Google Calendar extension to access the information. Google Calendar is a small Chrome extension that aims to deliver access to your schedule without having to switch between tabs or rely on third party desktop solutions.