Prior to the actual resource planning, the total processing time needs to be determined based on past data and/or standard times. In addition, a load forecast based on the total processing time needs to be created. Resource planning can be divided into employee-based and transport means-based resource planning and is a useful feature of a WMS. By its very nature, employee-based resource planning is based on personnel data such as working hours and working times of the relevant employee, qualifications and areas of deployment. For transport means-based resource planning, data such as key performance indicators, areas of deployment and availabilities are considered during planning.