Hello,
Yes it is possible to set SMS sending to a group of numbers when Input is triggered. If you do not have it already, go to Services > SMS Utilities > User groups, and add a group you want to send those messages to.
Second go to Services > Input/Output, click on Input Tab add new input configuration and there you can choose which input will trigger the event, yours SMS information, and what user group will receive said message.
Regards,
VidasKac.