Building Threshold groups on multiple domains

Has anyone come up with any way to automate the creation of threshold groups or in the very least to do it programatically through command line?

Performing this time consuming and repetetive task is daunting when you have more than even a few AM/PM domains.

I have (so far) been unable to locate any classes/operations that appear to allow this, and the relationships between matching criteria filters and the group objects seems hard to pin down.

Ultimately I would like to be able to create the group, assign matching criterea and settings, and configure the settings. Everything I have tried til now has led to dead ends.

Thank you,

Tim