In Appian, what does the 'Start Event' signify in a process model?

The 'Start Event' in a process model signifies the initiation of a process. In Appian, every process must have a starting point, which is represented by the Start Event. This event serves as the trigger that begins the execution of the process, setting in motion all subsequent activities and tasks defined within the process model. It is crucial because it dictates when the process becomes active, ensuring that the workflow can proceed.

The other options represent different aspects of process modeling that do not align with the function of the Start Event. For instance, ending a process or displaying status are functionalities related to end events or process instances, which encapsulate the completion and monitoring aspects of workflows rather than their initiation. Similarly, termination is associated with specific events designed for stopping a process, rather than starting it. Thus, understanding the role of the Start Event is fundamental for anyone working with Appian process models.