What is the best way to make a separate points pool?

Essentially I want another hit point like pool for sanity points.  Is there an easy way to build this?

Maybe create a new attribute on the Attributes & Abilities tab called "sanity_points" and link to it using a token bar. GM needs to edit the token settings. Token needs to be linked to the sheet obviously.

I used "zanity_points" to make it easier for me to locate in the list. ;-P

Goodluck