Change roles of incidents and losses
Incidents
The incident manager can change the owner and reviewer roles responsible for incidents if the status of the incident is In progress.
Losses
The loss manager can change the owner and reviewer roles responsible for incidents and losses if the status of the incident/loss is In progress.
Prerequisite
The change of roles assigned to tasks is enabled in Risk and Compliance configuration of ARIS Administration (General workflow).
To change an assignment, open the respective object and click 
Assign or 
Remove under Roles responsible in the row of the relevant role.