The functionality Shreyas is linking to was implemented in Windchill 10.1 M020 and can be found in the Best Practice topic of the Basic Adminsitration section of the Help Center. It supports both wt.parts and wt.docs.
I have tried to follow the instrucitons and in the Layout Tab forCreate New there are no available attributes those that are available have been added to a layout group but Revision is not one of them?
You must be logged in as a Site Admin. Go to the Type and Attribute manager, click on the part type you want to change, then pick the Create New Layout from the Layouts menu. You should see the following.