project planning Project planning is part of project management, which relates to the use of schedules such as Gantt charts to plan and subsequently report progress within the project environment. Project planning can be done manually or by the use of project m ...

, a slippage is the act of missing a

deadline Deadline(s) or The Deadline(s) may refer to: * Time limit, a narrow field of time by which an objective must be accomplished Arts, entertainment, and media Comics * Deadline (DC Comics), a fictional villain * ''Deadline'' (magazine), a British ...

. It can be an arbitrary

milestone A milestone is a numbered marker placed on a route such as a road, railway line, canal or boundary. They can indicate the distance to towns, cities, and other places or landmarks; or they can give their position on the route relative to so ...

put in place to help track progress. To avoid slippage, one must plan their projects (especially research) carefully to avoid delays in schedule. Using

Gantt chart A Gantt chart is a type of bar chart that illustrates a project schedule, named after its popularizer, Henry Gantt (1861–1919), who designed such a chart around the years 1910–1915. Modern Gantt charts also show the dependency relationshi ...

s and timeline diagrams can help.Software Reality
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References

Schedule (project management) {{Business-stub