I'm looking to create custom groups based on the "Script" criteria. (Powershell)

But nothing regarding scripts in UEMS is well documentet.

You can add scripts in the Script Repository, and define "script arguments" however nowhere is it documentet how to correctly format these.

Deploying a script as a configuration allows you to modify the Script parameter.
Using a script as a custom group criteria, does not allow you to modify the script parameter -

does that mean the parameter is not used at all?

does it just use the default specified parameter?

is the script even executed as part of the custom group, or does it just use the exit code off the last time the script was deployed with a configuration?
on scripts you can define Exit codes can you enter a range of exit codes? because the field is pretty limited.