Hi,
As Vicky alluded, there’s no easy way to change the rule type, and that’s on purpose. You could fork the plugin of interest, edit the code and re-package, but then you have to do that for each new plugin version, rather than being able to just benefit from the work of others. In all, this is really not a recommended solution.
Far better, to tell your architect that rule types are immutable - because within the UI they are.
Ann