Select Installation properties from the Action menu. In the following dialog, provide the following information:

After filling in the desired fields, click . If you changed the revision number postfix, a dialog box will pop up asking you whether you want to apply the new postfix to all existing revisions.

Click to have all existing revision get the new postfix, if you want existing revisions to keep the postfix they already had. In a new installation, there are no revisions that are eligible for getting a postfix, so the choice will not matter in that case.