haha123,
The Help Document is for managing the Fields on Work Items. It is where you can update the State Field to add the values you would like to the Dropdown. From the Help Document:
To manage, edit, or create fields, you must have subscription or workspace administrator permissions.
To access the Fields summary page, click any hyperlinked workspace or project name from the Workspaces & Projects summary page, and then select the Fields link from the sidebar, found at the left of the page.
You can then select the Artifact Type in the dropdown list at the top of the screen and then click the gear icon to the left of the State Field to Edit it.
Hope that helps.
Michael