dm251, -berZerker- is correct, and I completely agree with him, but I will just explain it in fuller detail:
1. Select your wanted events and conditions.
Now comes your part:
Right-click on the heading "Actions". A small menu will then pop up. Click on "New Action".
The New Action menu will then come up. There are two options of doing the next thing:
Opt. #1: Scroll down the New Action Menu until you reach the "Unit" section, which is near the bottom, above "Unit Group".
Opt. #2: Click on the white bar just below "Action Type", scroll down and click on Unit.
Now, scroll down the "Unit" section until you reach three actions
Unit - Make Unit face Unit <--- First One
Unit - Make Unit face Point <--- Second One
Unit - Make Unit face Angle <--- Third One
These three actions all do the same thing, except with different mechanics: The First one makes a unit face another unit.
The Second one makes a unit face a region.
The third one makes a unit face a selected angle. (E.g: 120 degrees)
Choose your desired one and fill in the red spaces. (Remember, the first red unit space in every one of those three is the unit that will do the facing, so keep that in mind.)
Presto! After the events are done and conditions are satisfied, your unit will face his/her destination with pleasure.
I hope this helped you.