Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.
You can make a calendar available for all projects in two ways:
Set a calendar as the default for all new projects by making that choice in the Change Working Time dialog box.
Make calendars from one project available for use in another project.
This second method is especially useful when you want to share calendars with other project managers in your company and don’t want to change your own default calendar.