But once i see it on the UI means it is already launched somewhere so i didn't quite get you.

The idea is you run it locally once (think debugging your code, or testing it)
While running the code the Task is automatically created, then once in the system you can clone / launch it.

Also, I want to launch my experiments on a kubernetes cluster and i don't actually have any docs on how to do that, so an example can be helpful here.

We are working on documenting the full process, I'm hoping to see something in the next week or so.
Are you running Kubernetes as a serice ? or an on-prem Kubernetes ?

So my use case is anyone of my team sitting on his laptop can submit jobs to a remote kubernetes cluster, ...

Yes this is exactly the scenario ClearML supports 🙂