Dynamically set MQTT broker configurations

General
1

Is there a way to set MQTT broker configurations like server, username and password dynamically. Maybe,we can configure these things through the input to the MQTT node, or is there any other way?

2

Yes, read the node help - especially msg.broker

3

Here is a demo of most of the help text info to Dynamic MQTT LWT birth, Close & Will Property - #2 by Steve-Mcl