I am trying to create a Kanban Board for my team in a specific project.
When I try to configure the board, I see this view in the Columns tab for my board:

But, I am not able to see the Add Status button like I see in one of the training video. (It seems Status can help to map appropriate columns.)

Here is the reference link:
https://support.atlassian.com/jira-software-cloud/docs/configure-columns/
I am not sure how to enable it. Can anyone guide me?