After choosing Jupyter Lab or Jupyter Notebook from the Interactive Apps menu you’ll need to specify your desired version, account, hours, cores, partition (standard or largemem), and memory (2GB minimum). You’ll also need to specify the Anaconda Python module you want to use:
Upon selecting “Launch”, your job will be queued on one of your nodes and shown on the “My Interactive Sessions” screen. As soon as the job’s status is “Running”, you can click on “Connect to Jupyter”.
For instructions on using Jupyter Notebook, see the official documentation.