EXFO FTB-500 (Window XP) - Manual (Page 236)

Preparing for Automation
228 FTB-500
Configuring DCOM Access to Your Unit
9. In the Launch and Activation Permission dialog box, tap Add.
10. 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 access rights.
11. Tap OK.