Script Download: ChangeRequiredStatus.zip
http://gallery.technet.microsoft.com/scriptcenter/Changing-required-status-6140981b
Changing required status for site columns in content type.
The required status for site columns have two options, required and optional .This script is to change required status for site columns in content type.
You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery