Add custom taxonomy

Hi,

With your plugin I can filter my posts to display my events (as custom post type created by a plugin) on my pages use visual composers (tagdiv in my case) not just posts.
The composer has a “multiple category filter” field where I can add some category ID’s coma separated. It works with post categories but display nothing if I add a category ID that belongs to “event-category” (custom taxonomy created by the same plugin). Can I use your plugin to extend it somehow for custom catgories. Category filter wouldn’t query just from “category” but from any other custom taxonomy (event-category in my case)?
Not sure it was clear ??

Attila