The bridge is connected but how to link Slack user to chat at Matrix

[gonzalloe]

As per title, I had successfully create a matrix-puppet bridging. But still, I couldn't receive any message from my slack team or vice versa.
What am I missing on the configuration part? Any ideas?

[IngwiePhoenix]

After starting the bridge, only the "Slack Protocol" room is created - and that is about it. Unfortunately, no rooms are created.

How do I make the bridge do that?