is it must to enable session timeout for the sleeping client? in 7.6?

[firemantank1982]

 WLAN Configuration for Sleeping Client 

make sure that the session timeout is greater than the client idle timeout, otherwise the sleeping client entry would not be created.

is that true? 

[mohanak]

Yes its True, client entry won't create

[Saurav Lodh]

Yes, it is.  These sleeping clients are clients with guest access that have had successful web authentication that are allowed to sleep and wake up without having to go through another authentication process through the login page, unlike normal clients who need to re authenticate after session is Timeout.