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How to add a new column to a lists schema

Posted By:      Posted Date: September 10, 2010    Points: 0   Category :SharePoint
Hi I want to add a new column in the schema of the calendar in sharepoint. So everytime a user creates a new calendar then he can automatically get that column to be filled. I know we can first create a list and save it as a template but my client doesn't want to see two calendars in the list type which will create a confusion. So i m looking for a way to add a yes no column the the existing schema of the default event content type.... Any Suggestions......Much Appreciated..

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