From my experience, that feature is not available on a MAC. MACs can only wake up from sleep mode not from Power off. This isn't a LANDesk thing, but just the way the MACs are. This is going by experience with the MACs we support, 2007 or 2008 MACs I'm not so sure.
Keos is correct. The Mac hardware does not support the magic packet that wakes a PC.
Is this also the case for the Intel based MACs? Shame if they lost base hardware features from the Intel platform.
Mark Star - MarXtar LANDesk Enhancements
Home of Power State Notifier & Wake-On-WAN for LANDesk
pmset can be used for scheduling startup and shutdown on Apple desktops and laptops.
REMEXEC01=pmset repeat poweron MTWRF 07:00:00 shutdown MTWRFSU 20:00:00
;REMEXEC01=pmset repeat cancel