Use this window to modify managed system and Power updates, view whether or not the updates can be applied without rebooting partitions or disrupting applications, and select the type of installation you want to perform.
A check in a check box specifies that you selected the target for managed system and Power updates. No check in the check box specifies that you do not want to select the target for managed system and Power updates.
You can find more detailed help on the following elements of this window: