Step 4.) With the Google calendar open, follow the two steps as shown in the image below.
Step 5.) Paste the url in the dialog box by first clicking in the URL dialog box then right click and choose paste.
The URL should be pasted in the URL dialog box. Click the Add Calendar button.
Step 6.) You need to refresh your web browser by pressing the f5 key or by clicking the refresh web page icon in your web browser. After refreshing your web page you should see the new shared calendar under other calendars as shown in the image below.