- On your computer, open Google Calendar.
- On the left, next to "Other calendars," click Add other calendars and then From URL.
- Enter the calendar's address.
- Click Add calendar. The calendar appears on the left, under "Other calendars."
- Click “Settings”. Change the long name of the new calendar to something you will remember such as “SignupGolf”

Important: You can only subscribe to a calendar on the web, from calendar.google.com.

You can show or hide calendars you’ve already subscribed to, but you can’t subscribe to a calendar in the Google Calendar app.

- Open the Google Calendar app Calendar.
- At the top left, tap Menu Menu .
- Check or uncheck your preferred calendar.

To add a calendar URL to an iPhone, you can do the following:
- Open Settings
- Select Calendar
- Select Accounts
- Scroll to Add Account
- Select Other
- Select Add Subscribed Calendar
- Paste or type the URL into the Server box
- Click Next
- Make any desired changes to the settings
- Save the calendar

You can also add a calendar feed URL to an Apple calendar by following these steps:
- Open Apple Calendar
- Select File
- Select New Calendar Subscription
- Paste the URL and click Subscribe
- Enter a name and color for the calendar
- Select a location and click OK

Add internet calendars
- Open your Outlook calendar, and on the Home tab, select Add Calendar > From Internet.
- Paste the URL from your internet calendar and select OK.
- Outlook asks if you would like to add this calendar and subscribe to updates. Select Yes.

Your calendar items appear and will synchronize. Any calendar can be turned on/off in the Folder Pane. Select the arrow to overlay the calendar if you want.