You can delete and archive both risk groups, risks and risk evaluations. To delete a risk / risk group, you must use the function under the "Archive or delete" tab. It is only available in edit mode
...
You must not delete a risk/risk group that has been in use - then you must archive as these have historical value. Items that have only been used for testing can be deleted.
NB! In the 21 version, it was possible to delete these elements without using the "Delete" function - this must not be done - ALWAYS use this delete function, otherwise the data will lose its relationships and the database must be cleared manually!