System-Admin or Company-Admin permissions./rest/dialplan/update/{    
    "type": "nm",
    "scope": {
        "company": ["company-id", ...]
    },
    "values": {
        "1": "on" or "off" or "sched",
        ... missing values unchanged ...
        "10": "on" or "off" or "sched"
    }
}
{
    "type": "nm",
    "scope": {
        "company": ["default"]
    },
    "values": {
        "2": "off",
        "3": "on",
        "4": "sched"
    }
}