That rule should look like:
Rule type: Missed Call
Filter type: All
Action1: System Default
Action2: Send SMS
To: {phone}
Message: blah blah blah
Appointment Category: work
All other settings may keep default values.
What i was trying to do washave it ignore any incoming calls and automatically send the SMS while I am at work. I wanted to avoid the ringing. I set it up and it ignored the call but my wifes phone never received the sms. I made sure I used the rules and such you suggested but still no sms?