If you by "facial controls" mean the morph dials that controls facial expressions, you will find them when you have the figure's head selected. The list of dials for the head usually starts with dials for morphing the head, then facial expressions and the last ones control the position of the head (twist, bend etc). Face files are found, as geoegress points out, among the folders in the right hand side bar. These files can be regarded as a pre-set combination of the dial settings for the head. You can use them as is or use them as a starting point to make your own expression.