Creating An Animated 3D Actor Symbol ("Sprite")

Step 4, The Job Chart - Static Postures - Expressions (1 of 1)

Now select "Expression" from the showcase bar to the right
Your self created expression is also listed there
Preview the expression by left-clicking on the icon
You know the static expression functionality already from "Creating own Facial Motions"
If needed create your own expressions with the "Expression Editor"
Now drag the expression icon into the blue job chart window.
Choose such static expressions if you don't need facial motions for your project