How do I Enable/Disable a component?
Currenty, the only way, is to do it via the XML direcly. Find the xml tag for the element, look for the Enabled attribute, and set it to true or false. This feature will be in a future version of YAMPAT.
I built a whole new PowerShell monitor and clicked save, but none of it's there!
You didn't click 'Apply' at the bottom of the monitor control. You always need to Apply AND Save. This is a requirement of the SCOM SDK that controls how validation of elements works when they are added.