The window is divided into two different areas. The left portion of the window contains a list of all registered users in MONITOR. To the right of the user the name of each user is displayed. The first row at the very top of the list is for exceptions that apply to all users.
In the right section you enter the file extension for the file type that the exception applies for. By default the entered file type is opened with the program that the file type is associated to in Windows. It is also possible to enter an absolute path to a program that should be used to open the entered file extension. In the right part of the window you can also add several exception rows for each selected user, if needed.