JBoss BPM Suite Form rendering in custom web application

Issue

There are two war application deployed in the same JBoss EAP instance:

• a. business-central.war – BPM Suite by Redhat http://localhost:8080/business-central
• b. core-web.war – custom web application for task management – Used for View Tasks, complete tasks. http://localhost:8080/core-web/
• business process with tasks and forms in business-central are designed and deployed in business-central. Process will be started through business-central (or may be REST API).
• However for completing the tasks in the process, business-central will not be used. Instead, custom web application (core-web) would be used to view tasks (through business-central REST API). Once user selects a task, associated form (from business-central context) should be rendered on the UI of our custom web application. A ‘Complete’ button will be provided in this custom web application.

Please suggest an approach to achieve above requirement.