Arham,
When you publish, for example
Lplan.publish("Temperature","info")
It will be published to <base>Temperature whatever your <base> is on cloudMqtt. To make this easier, I use a leading /MCThings/, so that I can list <base>/MCThings/#
I'm not using cloud Mqtt (mosquito), but it's the same. If you see mcThings/beacon/xxxx these are the beacons from your modules, they publish to automatic topic names.
There is no automatic naming for things you publish yourself.