Realmling has it right. Step-by-step:

Set up your character with only her character morphs applied (neutral expression)
Select the head, and go to the Object menu
Choose *Spawn Morph Target
*Enter a name when asked, eg the name of your character
Zero all morphs (don't panic!) by doing Edit > Restore > Figure
Select the head again if necessary, and set the character dial to 1.000
Save into the Figures library for future use.

I can't guarantee it, but I think that the new character dial setting won't be affected by your expression program - if it is, no worries, you now have only one dial to reset.