Possible to default Recruiter to blank using Auto Complete rules? (Job Requisitions)

Currently when setting up a new Job Requisition the default value for both the Hiring Manager and Recruiter are autofilling to the person entering the Requisition (the Hiring Manager). Our desired outcome would be for the Hiring Manager to default as it is currently and the Recruiter to be blank and allow for the Hiring Manager to select the correct Recruiter name from the list. Is this possible to accomplish through the Autocomplete Rules in HCM Experience Design Studio? I attempted to set the Recruiter field to null, but it is still defaulting to myself when creating the Job Requisition.