LangSmith - Working with hosted solution - How to run?

I tried to work with hosted LangSmith with no luck.
Help will be appreciated.
Questions/ Problem:

  1. The link to documentation is broken it links to which give 404
  2. a) It is also misleading that all the starting with “For more detailed information” sentence is marked as link
  3. How exactly can I run it? I tried [Ctl, Shift, Alt “”] + Enter, as in Jupiter, and looked for a button, right click but could not figure out how to run, neither in the Setup tab nor in the Runs tab.