Possible Clues:

• He's not here!
• How a bee gets sent in here for not being all there
• Not for a present, perhaps, does it buzz around the sound of a scent
• How an insect is about to be dismissed, but not for the present
• One who should be but isn't present
• One is certainly not all there to get dismissed in a buzzer
• Deserter - truant b
• One failing to attend
• One away from work
• He wouldn't appear personally, but sent in a worker