What is the minimum permission required for a user to start a process model?

To start a process model, the minimum permission required is indeed classified as Viewer. This role allows users to view the process model but does not grant the ability to make changes to it. Starting a process involves executing or initiating the model, which can be performed solely by users who have at least Viewer access.

Understanding the functional roles within Appian is essential: while Editor and Administrator permissions provide higher levels of access, such as modifying and managing process models, they are not necessary for merely starting an instance of the process. Thus, the Viewer permission strikes the right balance by granting the capability to start a process without permitting modifications, which aligns with the principle of maintaining controlled access to modify workflow processes.

This emphasizes the importance of assigning appropriate roles in workflow management to ensure adequate access levels while protecting the integrity of the process models.