Answer:
In principle, it is very simple to use the interface. After successful installation, the Dlubal toolbar is available in Rhino. This includes two icons (Export and Import).
"Import" allows you to import data from RFEM to Rhino. In this case, the whole RFEM model is always imported. No update is necessary. The data are added to the existing structure.
"Export" allows you to export data from Rhino to RFEM. The entire structure is usually exported. If you only want to export parts of the structure, select them before starting the export. In order to perform the export, it is necessary to open RFEM and create a file. Please note that the export procedure overwrites all existing data of the opened file. Therefore, we recommend opening an empty file.