Sorry for misunderstanding your question. 

The problem with creating a new user (and not a new person) is in the tutorial.
There is no "create user" in the sidebar as shown in the tutorial. But you can
do the following steps:

  • log in as zope again (pckalbxs) 
  • Go to "Modules" - "Persons" and choose the person that you want to create
    the login for.
  • choose "+Add" - "ERP5 Login" - "Create Document".  
  • Add the User Login and the password.
  • Now switch to the "Assignment" view and click on the newly created login
    (which is still in Draft state). 
  • Click on "Actions" and select "Validate" - and "Validate" one more time. 
  • You can now log off from zope and the new ERP5 login that you created.
  • After the test, log in with jingjing.xu again to continue with the
    tutorials.