How to set MagFit options?

I’ve taken a look into using MagFit again.

Kudos to the MagExplorer DEV team for recent enhancements - it again works in the current stable release, and it appears that selecting a range on a graph is no longer required. (As I recall this was stipulated in the brief tutorial video on using MagFit.)

I haven’t been able to find documentation on the MagFit options. Can someone please direct me to information that explains how to set these numerous options?

Thank you!