How do you create a new user role in Mendix?

To create a new user role in Mendix, it is done through the security settings in the Mendix Modeler. This approach allows developers to navigate to the 'Project' menu and select 'Security,' where they can manage user roles effectively. By using the Modeler interface, users can define the specific permissions and access levels for the new role, ensuring that it meets the application's requirements for different types of users.

Creating user roles is a crucial aspect of application security, as it provides a way to control who has access to what within the application. The Modeler provides an intuitive user interface for defining user roles, setting permissions, and ensuring best practices in application security.

Other methods mentioned are not applicable for creating user roles: modifying existing roles would not facilitate the creation of new roles, using the project's main settings does not specifically address user roles, and utilizing a command line tool does not typically apply to user management tasks in Mendix. Thus, the security settings in the Mendix Modeler are the appropriate location for this task.