The following is an excerpt, slightly modified, from issue 2 of the Introducing SharePoint 2010 subscription series of USP Journal.
SharePoint 2010 Calendar
The new SharePoint 2010 calendar has a couple of very nice new features. Click the Calendar link in your Team Site to enter the default view of the Calendar list and then click the Calendar tab in the Ribbon. You will see, among other useful tools, the Calendars Overlay button, shown below.
This button allows you to see events from multiple calendars in a single view, and immense improvement over the previous version of SharePoint. The overlay works across all sites in a site collection and even across different site collections.
Creating a Calendar Overlay
To test this feature, create a new sub site under the current site (hint: it’s available from the Site Actions menu). This will spawn the new Create dialog box, which I personally will need a bit of time before I like.
Once you have created your new site, add a few entries in the Calendar list of the new site and then return to the top site (hint again: you need to use the breadcrumb menu to navigate to the top site if you chose the default options when creating a new site).
Then, re-enter the Calendar list of the top Team Site and click the Calendars Overlay, found on the Calendar tab. Click the Add Calendar link, bringing up the Customize Calendar page shown below.
Enter the URL of the web site you just created and then select the new Calendar list and the default Calendar view.
Notice that you can also link to Exchange calendars using the Calendars Overlay function.
When you hit OK, SharePoint returns you to the Calendar list and shows the sub site events in your top site calendar.
Neat, eh? No more third party add-ons to aggregate calendars, and remember, this overlaying can span site collections as well.
I want to show you one more really nice thing about the new Calendar. If you hover your mouse pointer over the date in a calendar view, you will get an Add link, as shown here.
What makes this even cooler is that you can click and drag to select multiple days at once, and using the Add link you can then add an event spanning multiple days, as shown here.
These features are really useful and saves you from writing custom solutions or using third party add-ons.
If you want to learn even more tips and tricks, you can pick up an Introducing SharePoint 2010 issue at http://www.introducingsharepoint2010.com/.
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