end point agents and OS Monitor Script

hi,

I add end point agents on Windows VMs.
I wish now add a "OS monitor script" to retrieve metrics
Can I use powershell?
Where can I find examples?

I only found this: https: //www.vmguru.com/2016/04/vrealize-operations-adding-os-monitor-script/

There is a documentation somewhere?

Thank you for your help