An operator in the Testing group has temporarily locked a managed computer so that it will not be affected by ongoing testing. She is now ready to unlock the
computer and finds the computer in the Computers node of the All Content domain. How would she unlock the computer?
Right-click the computer and select Unlock Computer from the Context menu.
Right-click the computer, select Edit Computer Settings, and change the value of the _BESCIient_LockingStatus setting to 0.
Select the computer in the computer list to display the details in the work area and then click the Unlock button in the work area.
Right-click the computer, select Edit Computer Settings, and clear the check box beside the Locked option in the Edit Computer Settings dialog.
http://pic.dhe.ibm.com/infocenter/tivihelp/v26r1/topic/com.ibm.tem.doc_8.2/Tivoli_Endpoint_Manager_Console_Operators_Guide.pdf (page 78)