Action owners should be assigned to each of the activities that are set up for each EBSM Schedule. Without the assignation of owners, a Library Service runs the very real risk (and likely outcome) of steps not being carried out or EBSM Action Plans not being followed.
Since the methodology relies heavily on following the Schedules, all slippage of steps in Schedules will have the cumulative effect of delivering performance improvements that fall significantly short of the targets being sought.