The more complex systems become, the more complex the necessary maintenance activities become. An up-to-date and comprehensive overview of existing personnel resources can offer decisive added value here. Our lean add-on “MAINTENANCE PLANNING” can be put into operation quickly and easily. It enables the flexible allocation of employees, organizational units and orders, based on data already available in the PM module and integrated from an HCM system. As a Fiori application, our solution is user-friendly and can be used on different end devices.