How can I add postgresql tools to the command line

I am following a tutorial and I am trying to add postresql tools to the terminal, i am having trouble doing that, I have postgreSQL already installed in my laptop

this is the tutorial that I am following https://www.youtube.com/watch?v=I6ypD7qv3Z8 go to minute 12:20 to understadn what I am talking about. I want to have 1_mikroORM-setup in the CMD

thank you