Adobe ACROBAT READER 7.0 Manual page 132

Adding identity information to a stamp
To approve a PDF document that includes additional usage rights, you must first add your
identity information to a stamp. Once you set up a digital identity stamp, that stamp is
selected by default in subsequent approval workflows.You can change the identity
information for your stamp at any time in the Identity preferences.
To add identity information to a stamp:
1. Select the stamp you want in the Stamps palette.
2. Choose Edit (Windows) or Adobe Reader (Mac OS) > Preferences.
3. Select Identity from the list on the left.
4. Type your name, title, company name, department, and email address in the boxes
provided, and then click OK.