Answer:
When installing the products RFEM 6, RSTAB 9, and RSECTION 1, the working directory is created under the following path:
C:\User\[Your User Name]\AppData\Local\Dlubal
Image 01 shows the display of this folder.
The file path of the working directory was fixed until the version x.10.0001, and could not be changed subsequently.
As of the version x.10.0002, the path can be changed in the program options:
The working directories of the individual programs are located in the corresponding sub-folders. Image 02 shows the directory of RFEM 6.02.
Among other things, you can find the local program configurations and the most recently used program instances here.