Extending User Task

Hi everyone,
I’ve extended BPMN to support a specific task type. I have a problem of configuring process engine to treat this task type in a defined way.
been reading all documents and examples Camunda amazing developers have provided but still can’t figure it out so sorry to be of trouble by this topic. Could anyone gimme a clue where to look for this?
Best Regards
ps: didn’t know which category this topic should have been created so sorry if it might not be the right selection
ps: I think it needs more explanation but for the sake of briefness I created the topic like this