Yes, you can hide the calendar by clicking it in your list of calendars on the left of your calendar view.
FAQ Category: Cal-share
If someone shares their calendar with me, can I get emailed when people accept that person's invitations?
Yes, you can set up notifications for a shared calendar. However, by default, notifications are turned off. Here's how to turn them on: Access Google Calendar. In the upper-right corner of the page, click Settings. Click the Calendars tab. On the Calendars tab, click the Notifications link for the calendar. Choose the settings you want. […]
If I want to access my friend's calendar, does that person need to give me permission?
Yes, if you want to access another person's calendar, that person must give you permission, by editing the settings for the calendar.
What level of access do others have to my calendar? Is my calendar public?
By default, your calendar is shared with no one. However, you can modify the sharing settings. If you share your calendar with everyone at your domain, you can specify whether they can see only free/busy information or all event details. You can also share your calendar with specific people and give them one of the […]