The most capable tool is Jupyter Lab (https://theghub.org/resources/4913) If you get an error on launch, just clear the workspace.
On the left you can navigate the directory structure and double click a notebook file of your choice. If you get asked, choose the Python3 (ICESHEET) kernel.
You can also fire up a Terminal to make links, copy files and the like. It was recommended to link the project into your home so you can have easy access.
user@theghub-xyz:~$ cd
user@theghub-yxz:~$ mkdir projects/
user@theghub-xyz:~$ cd projects/
user@theghub-xyz:~/projects$ ln -s /data/projects/ismip7sealvel ./