In the films, the 00 section is a discrete area of MI6, whose agents report directly to M, and tend to be sent on special assignments and troubleshooting missions, often involving rogue agents (from Britain or other countries) or situations where an "ordinary" intelligence operation uncovers or reveals terrorist or criminal activity too sensitive to be dealt with using ordinary procedural or legal measures, and where the aforementioned discretionary "licence to kill" is deemed necessary or useful in rectifying the situation.
In the films, the 00 section is a separate division of MI6, whose agents report directly to M, and are typically dispatched on high-risk missions and problem-solving assignments, often involving rogue operatives (from Britain or other nations) or situations where an intelligence operation uncovers or reveals sensitive terrorist or criminal activity that requires extraordinary measures.