How to change a password for Jupyter notebook

I have reading the instructions provided to secure a jupyter notebook server, but I am having some difficulties implementing these instructions.
When I attempt to create a password this is what I see: image
When should I enter the function [notebook.auth.security.passwd()] so that I can create a hashed password that looks something like ‘sha1:67c9e60bb8b6:9ffede0825894254b2e042ea597d771089e11aed’?