If you want to prevent your users from creating new Kanban or Scrum boards, you can paste the code below in your Announcement Banner:

<style type="text/css">
#ghx-wizard-methodology-kanban { display: none; }
#ghx-wizard-methodology-kanban-sample { display: none; }
#ghx-wizard-methodology-scrum { display: none; }
#ghx-wizard-methodology-scrum-sample { display: none; }
</style>

If you need to allow it, change the “none” to “all” and it will display the button again.