It is not possible to delete a response. However, you can modify it, in the 360 workforce survey. You may get/export the unique survey link for the subjects that are getting evaluated. That link will allow the evaluator to edit/change his/her responses for that subject. The link can be generated under distribute> deployment>ongoing(select an ongoing deployment)>participant selection> Evaluators>Export participants. This will generate an excel file with the name of the evaluators and the subject with the link to re-evaluate/change the response for the subject. The response id will remain the same. Only the responses get edited. Screenshot:- https://www.screencast.com/t/NjgPV93McBpt + https://www.screencast.com/t/rccGd31ea