JupyterHub, jupyternotebook and pycharm

I have been using pycharm for most of my jupyter notebook development. Currently we want to start using jupyterhub to run a small group of users data exploration on a compute computer. 

I have been able to setup jupyterhub correctly, using mostly default settings. When I login to jupyterhub I see the notebook spawning and I can execute code etc. 

My problem is that I cannot figure out how to connect to this spawned notebook instance using pycharm. The documentation about this seems to indicate that it is possible. 

Is what I want possible and how would I set it up?

Kinda regards,