Microsoft Outlook is one of the most widely used software programs for email, but if you're only using it for email, you're missing out on a great productivity tool! This month's column looks at a few ways you can use the Outlook calendar to make scheduling easier.* Add public holidays to your calendar automatically.On the Tools menu, click Options, and then click Calendar Options. Under Calendar options, click Add Holidays. Select the check box next to each country/region whose holidays you wan...