How to prevent employee submitting the 360 performance document before paticipants

Summary:

How to prevent employee from submitting the 360 Performance document before all participants is completed the questionnaire / ratings ?

try to exploring the the lock share task but it is not available because there is no manager involved in this process

Also we won't let the employee can track the participant or name, Ideally employee will not known the status of participants

Version (include the version you are using, if applicable):

23A