Go to dashboard page and take note of the username under Info!: Use your username: XXX to access the experiments' nodes.

Ensure the experiment status is "running".

Click "View" on the running experiment to view more details.
Note the qualified name, e.g. n0.demoexp.project.ncl.sg.
Using a SSH client
(i) SSH into users.v1.ncl.sg with the username from Step1
(ii) After that, SSH into the node with the qualifed name from Step3