How kanban application works?

Hello I was trying to make the kanban application works but I am stuck.
When I click on add issue it open a search view where there is nothing.
Also when I try to publish it does nothing

I saw this new app from the Project Planner (XPP-OC) - R2023x FD03 but I don't know how to achieve what the demo screenshots do.
Is someone able to give a bit of help? I did not find documentation about it.