In a work model, a “Milestone” symbol is used to represent a significant point or achievement in a project or process. A milestone is a way to track progress and measure success in achieving a particular goal or objective.
Milestones can be used in different ways within a work model. For example, they can be used to mark the completion of a major phase or task in a project, the achievement of a specific deliverable, or the attainment of a particular performance target. Milestones can also be used to identify critical points in a process or project, such as the point where a decision must be made or a resource must be allocated.