
Morph Target Groups are listed in the Layer Window and Circled in Red You need to create these to stay orderly and to keep from crashing the computer. Also make sure you turn off the rendering on these layers by clicking on the teapots otherwise you will render all of your morph targets plus your character which might crash your computer. You don't want to do that.
To add a morph target right click on an empty slot and select the pick option that comes up then click on your morph target. To make a morph target select the main character model and then hold down the shift key while using the translate transform modifier which you can bring up by pressing the w key. Now remove the upper layers in the stack that are circled by clicking on the trashcan icon. Now select the Edit Poly Layer in the stack and mold the expression you want the character to have.

In order to get 2 more Morph Targets from a single morph target. Select half of the Main Character Model and then use the morph target spinner all the way up to 100. Now make the morph target the way you would normally make a morph target listed above.