I've only seen this one discussion thread showing a very nice ABMaterial-based [webapp framework] 'custom component' example:
https://www.b4x.com/android/forum/threads/abmaterial-kanban-reporting-customcomponent.80546/#content
I have found some Javascript-based kanban board options out there, which could be run within an HTML file (loaded into a B4J WebView) - but they are all functionally limited (with the exception of a few commercial product offerings), so I prefer spending my time coding a B4J solution via use of an available library if one does exist (before considering creating from scratch).
https://www.b4x.com/android/forum/threads/abmaterial-kanban-reporting-customcomponent.80546/#content
I have found some Javascript-based kanban board options out there, which could be run within an HTML file (loaded into a B4J WebView) - but they are all functionally limited (with the exception of a few commercial product offerings), so I prefer spending my time coding a B4J solution via use of an available library if one does exist (before considering creating from scratch).