How to Enable usage rights for Adobe Reader in Acrobat 9 Pro

In this video tutorial the instructor shows how to enable usage rights for Adobe reader. She begins by showing a multiple page PDF which can be viewed by anyone having a Acrobat reader. She goes to advance menu and chooses the option of expand features in Adobe reader. She says that by granting these rights in Adobe 9, we can let other people write into the forms of the document, comment it and even sign the document. Now she applies the features and saves the document to the desktop. Now she opens the created document in the reader which shows the options to sign and comment on it as it was applied to the document in the previous step. This video shows how to enable usage rights of a PDF for Acrobat Reader.