1. A method for entering at least one assignment of a first object of a first object hierarchy to at least a second object of a second object hierarchy, wherein at least the second object hierarchy includes a plurality of objects and at least one folder object, each object having an object type of a predefined set of object types, the at least one folder object being the root of a sub-hierarchy of objects, and the first object having an associated sub-set of the set of object types, the method comprising: displaying the first and second object hierarchies; selecting the first object from the first object hierarchy; displaying an indicator symbol for the at least one folder object if the sub-hierarchy of the folder object contains at least one object having an object type of the sub-set; and displaying, in response to a selection of the folder object when the indicator symbol is displayed, an assignment symbol between the first object and the folder object and/or between the first object and the at least one object of the sub-hierarchy.