Everyone, especially management, loves to have a universal calendar.  Due to SharePoint’s tight integration with Outlook, this can easily be achieved.  Thru SharePoint’s built in calendars, you can feasibly view calendars in Outlook, click and drag appointments from Personal Calendars, schedule PTO, and many other items needed from a group or department calendar.

Steps on how to create:

Navigate to a specific site where the calendar is located.

When the calendar is displayed, click the Actions dropdown and choose Connect to Outlook.

Click OK to the message to accept this calendar.
 
Go to the Calendar section of Outlook.   Check the box to view the Public SharePoint folder you just added. If you line this up side by side with your personal calendar, you can simply click and drag events from your personal to the public SharePoint calendar. 

After you click and drag the appointment to the Public SharePoint folder, Click Yes to the message displayed.

You will now be able to see the event on personal calendar and well as the calendar in SharePoint
 
If you go back to the calendar on the SharePoint site and click refresh, you should now be able to see the event you just added as well.  You can click on the event if you want to see the details.
 

On the flip-side of things, events can be entered in SharePoint by a manager perhaps.  Look at the example where a manager scheduled a meeting in the SharePoint group calendar.
 
So you don’t miss this meeting, you want to make sure that this appointment is in your personal calendar. 
Go back to the calendar section in Outlook and make sure the SharePoint calendar is lined up side by side with your personal calendar again. You can click and drag it to your calendar. 
 
OR
You can double click on the appointment you wish to add to your calendar and click Copy to My Calendar.
 

This is just another example of how easy SharePoint can be. Feel free to post any comments or questions regarding any of our blogs.  Thanks!