Custom Virtual Users
                                                When starting any new project, we recommend that you have at least one custom virtual user (VU) class from which your scripts can inherit. Creating a custom VU brings added functionality and ease of use to your scripting.
Custom VUs allow you to:
- Place common code in a central location, where it can be accessed by multiple scripts, and across multiple projects
 - Override functions in the super virtual user classes
 - Create common script generation rules for certain virtual user types
 - Control how engines are created
 - Set configuration options for relevant custom VUs
 
Custom VUs are created and held in the Workspace. They can be re-used across multiple projects if necessary.