Ithaca DWI Lawyer: Who Decides When Your Ignition Interlock Goes On and Comes Off?

Since 2010 all New York State DWI convictions must have an IID (ignition interlock device) installed for 12 months. This if for any breath test or blood test over the legal limit DWI or aggravated DWI. But if the device is on with no issues you can petition the court to have it removed early (after 6 months).

So how does it (the ignition interlock) go on and how does it come off? Who controls the process of ignition interlocks in NYS?