It is known as the master self checkout machine (one per store). If a guest a has dispute with any other self check out machine, that machine will refer the guest to digital team lead machine which allows guest compliants to be reviewed and possibly corrected by the final power of the digital team lead machine. This machine will have exclusive options not found in digital team members (other self checkout machine). Digital team leader will be responsible for the accurates of all other machines in the store. Coaching and Corrective actions will be given to other machines when to many errors or a serious error is displayed. Eventually termination will occur of self check out machine when needed and a new machine will hired (installed).