Christoph,
For some reason example data what comes with standard installation is missing, it gives very good idea about information that field can store , either to use it as it is or add or alter it. but in our case so many fields are blank.
Please check the image attached, we can't possibly manually this type of information ,when the fields are blank.
When refer some other notes, as always SAP suggests use standard workflows(which are good I feel aswell ) without changing as much as possible.
Now question is.. ,if you see it blank , there is any way to get these seed data back .
Regards,
Chakra Adari