Rest API Connect Task,User,Process not working

I have created process definition from "http://localhost:8080/flowable-modeler/"
and task from http://localhost:8080/flowable-task/workflow/#/tasks
and user from http://localhost:8080/flowable-idm/#/user-mgmt

i wanted to connect tasks to process and user to task

for this please share me Rest API


I’m not sure I really understand your request…

But as reminder lets remind a simple (and non exhaustive) process lifecycle.
First you have to define a Process Definition. This process definition will contains steps (eventually tasks with forms definitions.)
This process definition (when finished) needs to be published or deployed to the engine runtime.
It’s at this moment you can start a process (a process instance by on a process definition).
Next during execution of this instance people can have access to their task (by assignation or by candidature).
When all the steps are done (or process cancelled), the process instance is terminated.

Hope it helps.