When searching for users in Filter Options for the job requisition summary page, the username is shown in brackets:
Is it possible to hide the username from the Filter Options?
Yes - if you don't want to show the username in the Filter Options for the Job requisition summary page, you can contact Cloud Product Support in order to hide the username from the auto-complete.
The Implementation Partner / Cloud Product Support Engineer can check the option "Hide (user name) in the UI" from the back-end of your system (Provisioning > Company Settings). When this option is checked, the auto-complete will display Location and Department instead of username:
KBA , LOD-SF-RCM-JOB , Job Postings & Requisitions , How To