Check-in enterprise calendars (Project Server 2010)
You can force the check-in of an enterprise calendar that is checked out. Note that forcing a check-in of an enterprise calendar that is being modified by a user may result in the loss of those changes.
Use the following procedure to check in enterprise calendars.
To check in enterprise calendars
On the Server Settings page, click Force Check-in Enterprise Objects.
From the Select the type of object you want to force check-in drop-down list, select Enterprise Calendars.
Select the calendars that you want to check in.
Click Check In.