Gracefully shutting down Pfsense with NUT

I have been playing with the NUT UPS utility, and have setup a NUT server on my Raspberry Pi.

I can see the UPS data on that server when I install the NUT package on Pfsense.

My question is, how can I configure when the Pfsense box will shutdown in a power loss event? Will it automatically shutdown at a given % out of the box, or is additional config needed?

Do I perhaps need to add something to this config section?