There are some reasons for configuring how how long it takes to log all the test users off in a certain amount of time is beneficial.
This can simulate users logging off within a short time-frame, such as at the end of a workday. This can be an easily overlooked, albeit important, testing method.
Some unique testing this feature can achieve, for example, is: performing roaming profile writes to the profile storage medium. The shorter the time-frame is to log off all test users, the more stress this will generate on the storage potentially.
Where to set the amount of time to log off all sessions within, and what the different times are, are mentioned here:
Be sure to choose a realistic ramp-down time-frame according to the human-user simulation.
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