EXFO FTB-500 (Window XP) - Manual (Page 241)

Preparing for Automation
FTB-500 233
Configuring DCOM Access to Your Unit
7. In the Launch and Activation Permission dialog box, tap Add.
8. In the Select Users or Groups dialog box, under Enter the object
names to select, type the name of the user to whom you want to give
start and activation permissions for remote access.
9. Tap OK.