User Roles determine what a User can do in an Organization. Everyone under an Organization will have to be assigned to a User Role. There are three User Roles and their rights:
Managing Workflow Templates
Working on Tasks
The persons who manage the Organization.
The persons who manage works in the Organization.
The persons whose focus is to work on Tasks in the Organization.
User can create Quick Start Projects.
To change the User Role of a User, please refer to: Changing User Roles