Question about widgetizer

Is widgetizer intended to be for releases only and not for developing?
Because i dont get it how to make new abilities in object editor or with grimex.
How do i create new abilities in a widgetized map (preferably with grimex's object merger)?
Or simply use normal map (have backup) and widgetize it when its final?

Use a separate, widgitized, copy of your map for release.