Batayneh --
Do the following:
1. Launch Microsoft Project Professional and log into Project Server with
administrator permissions
2. Click Tools - Enterprise Options - Open Enterprise Global
3. Click Tools - Change Working Time
4. Set all of your company holidays as nonworking time on the Standard
calendar
5. Click OK
6. Save and close the Enterprise Global
7. Close and relaunch Microsoft Project Professional
All projects that use the Standard calendar as the Project Calendar will
automatically rececive your company holidays the next time their project
manager launches Microsoft Project Professional, logs into Project Server,
and opens a project. Hope this helps.