Odd behavior from SmartThings button

I have a SmartThings button that I was able to connect via HUSBZB-1 stick.
If I go to Automations, I can select the device and the proper action “button press”

But if I try to select the same “button press” trigger from NodeRed it is not there:

Similarly, if I go to “Entities”, there is no actual button entity for this device…

How do I got about writing an automation based on “button press” in NodeRed ?
What am I missing here…?

Thank you,