This document summarizes Henrik Kniberg's presentation on multi-team sprint planning. It discusses forming cross-functional teams, having either a single product backlog or multiple product backlogs, and providing an example agenda for multi-team sprint planning meetings. The document also covers typical challenges that can occur in multi-team sprint planning like priority problems, fatigue, and running out of time, and provides recommendations for effective multi-team sprint planning like ensuring the product backlog is prepared, using analog tools instead of computers, and taking regular breaks.