Workflow - Plugins - License Status
The License Status Manager lets you view licensing information about Workflow and Workflow-related applications (such as ServiceDesk). This tool also lets you run tests on your license to verify that it works properly. The tool does not create or manage licensing. The Symantec Management Platform manages all licensing. The tool communicates with the Symantec Management Platform to determine licensing information.
Workflow - Plugins
Symantec 
Workflow Manager has a number of Plugins available from install.
Workflow - Plugins - Generate Business Model
The 'Generate Business Model' Plugin allows you to add a custom Model to your Project which allows a process to be documented, this is not going to produce any code but is a great place to inform Developers who you wish the process to be work.
Workflow - Plugin - Developer Guide - Inspecting
In this Article I'm going to explain how to inspect other Plugins to learn how to implement items that aren't in the Developer Guide PDF.
Workflow - Plugin - Developer Guide - Simple Plugin
In this Article I'm going to explain how to create a simple Plugin with the basic properties and show some infomation about the current Project.
Workflow - Plugin - Developer Guide - Setup
In this Article I'm going to explain how setup your environment for creating a Plugin.
Workflow - Plugin - Developer Guide
In this set of Articles I'm going to explain how to create a Plugin for use within 
Workflow.