Select Com Port from Connected Device List and click on 'Use Selected Device' button to start SMS Sending Process.
Load Recipient Number using Load Contact File or Add or Paste numbers Manually. Click on 'Mobile Phone Connection Wizard' to start connection process between mobile device and Mac machine.
Choose options like Delayed Delivery Option, Use Exclusion Rules, Save Sent Items, etc and click on 'Send' button to send messages.
If No USB Modem device is selected, then click on 'USB Modem Connection Wizard' to start connection process. Wizard shows "SMS Sending Process" is in progress.