Cannot set My Book Essential 3T sleep time

Please help me determine if I use the right application.
My environment
Mac OS 10.9
My Book Essential 3T - mounted and accessible in the Finder
I installed WD drive Utility hoping to set up the Sleep Time which be default is too slow.
The Utility doesn’t detect the drive therefore I have no access to the setting.

Thank you,


Please see page 46-47 of the user manual for help setting up the sleep timer on the unit.

Link to manual: