Odd behavior from SmartThings button

1

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”

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But if I try to select the same “button press” trigger from NodeRed it is not there:
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Similarly, if I go to “Entities”, there is no actual button entity for this device…

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

Thank you,

Boris.