Answer:
This is not possible directly in RFEM, but the RF‑/STEEL EC3 add-on module allows you to create a list of steel parts. In the Details of the add-on module, you can specify whether the parts list should apply to all members or only for members to be designed. Then you can simply carry out the calculation and the parts list will be displayed. It is also possible to export the parts list to Excel and edit it further.