Any project needs a leader.
This doesn't mean they should be responsible for checking every system personally, just that they make sure all systems have been checked by someone. You only have a limited amount of time, so channel your efforts efficiently to minimise disruption. Managing the workload Ensure that someone is working on each area in your organisation that needs addressing. This includes making sure there's no duplication of effort. While you need to ensure your critical systems will cope with the year 2000, there's no point spending more money than necessary.