How to add lanes on a SmartSheet template?

Hi All,

I'm looking to modify the editorial calendar template shared by Joe Weller here:

Specifically, I want to more Status points beyond Published, In Progress, On Hold, Not Started-- which is helpful for Kanban view.

Yet, when I switch to card view, there's no option for me to add lanes. Help centre says it should be at the rightmost, yet I couldn't find it.

Would anyone be able to tell me how?