The role is pre-assigned to the following external roles:
In some forms it is possible to assign a signing right by specifying who will sign directly in the form before submission. The right of signature can either be assigned a birth number or an organization number (business).
The parallel signature role is only used if the signature is assigned an organization number. Then there are the external roles mentioned above that can sign, because they have pre-assigned the role of parallel signing. The role can be delegated to others in the business.