Obviously, you'll need the distract ability (stealth skill of 5 or higher) to do this:
1) Hold down your F5 key (or whatever you've bound your AE targetting to), while moving the yellow crosshairs on the ground with the cursor keys. When the crosshairs are on the spot you would like the mob to turn towards, release your targetting (F5) key. Note that the target must be near both you and the mob. You'll figure out the exact range with use.
2) Click on the mob to select it.
3) Click on your distract key. You will go through an animation of tossing a stone.
If it works, the mob will stop and turn towards the area you had selected in step 1.
Repeat steps 2 & 3 with additional mobs if desired.
Thanks to Infiltrator_X for writing this up.