One way to look at the dossier feature is as a badge layout override. Normally, badges are displayed according to the template design specified for each. When the dossier button is pressed, they are all displayed using one specific layout. This layout may or may not include the same information as the normal layout for the particular badge.
One possible use for this feature is to develop a layout for the reverse side of a badge. It is not necessary for a layout to include any data from the database, so you could generate a layout which includes company information, fixed text (like a company slogan) and the like and then pass printed badges through the printer reversed to print the other side. If the reverse side data did include any information specific to each badge, you would have to make sure that the front and back match for a given individual!
Another example of the use of the feature might be for schools where the young student’s badge just displays the student’s picture, but the template assigned to the dossier feature could include a photo of both the student and the parent or guardian. With one click of the button, the student and associated parent could be confirmed.