I see. For that we should add a link that posts a new topic in the Support category:
https://discourse.slicer.org/new-topic?category=support
We can even pre-populate the topic name or body:
[ https://discourse.slicer.org/new-topic?title=topic%20title&body=topic%20body&category=support]
with some more text:
https://discourse.slicer.org/new-topic?body=Operating%20system:%0ASlicer%20version:%0AExpected%20behavior:%0AActual%20behavior:&category=support