curl --request GET \
  --url https://api.smarterproctoring.com/v1/installs/{installSid}/reports/appointmentVolume \
  --header 'token: <api-key>'

{
  "dayOfWeek": [
    {
      "day": "<string>",
      "volume": 123
    }
  ],
  "perHour": [
    {
      "hour": 123,
      "volume": 123
    }
  ],
  "perDay": [
    {
      "day": "<string>",
      "volume": 123
    }
  ]
}