Welcome! The only official way what’s built into SHM itself.
There used to be an “alert with lights” option in SHM, then it went away for a little while, and I don’t know whether it has come back or not. It’s still listed in the official knowledge base:
https://support.smartthings.com/hc/en-us/articles/205380154-Smart-Home-Monitor
If you want something more flexible, CoRE ( The community – created replacement for rule machine) has an SHM trigger feature.
CoRE (now WebCore) is a very powerful community – created rules engine for SmartThings. It allows you to set up stacked conditionals like “If A then B but only while C and not if D.”
Setting it up can be quite complex, but there are many community members who will be glad to help you.
For example, here is a piston that one member created to notify him if the dog had already been fed twice that day and he picked up the dog bowl for a third time. He needed this because he has a large family and people didn’t always remember whose turn it was to feed the dog.
