Yes ... First, select the head and then ...
You can use the Grouping Tool to make a New Group ...
(named "mask" or whatever you want to call it)
... and then select the polygons you want to include in the "mask"...
... and then click the "Create prop" button and ...

Walla !!! :biggrin: ... You have a "mask" prop. (object).

cheers,
dr geep
;=]

Remember ... "With Poser, all things are possible, and poseable!"

cheers,

dr geep ... :o]

edited 10/5/2019