Any organisation plans, whether it is project planning or personnel planning. To ensure accuracy, a multitude of information is needed. When looking for a suitable solution, you shouldn’t forget to verify how all that information flows through to the planner. This avoids guesswork and inaccurate planning.
From our international experience, we see two different types of planning. Team planning, where available time takes precedence, and planning for requirements, which is more often used in retail and in large businesses.