A modal dialog combines a pop-up window with a flow action as the front most screen where the user is working. The dialog box is centered in the viewing area, and the user cannot continue with other work until he has submitted the form or dismissed the modal dialog. The flow action provides the section or sections containing the form fields the user is to complete.
When the user submits the form, the system updates the work item and the modal dialog closes. The user can then continue working with the main screen display.