As a product manager, defining goals and prioritizing them is a crucial step in developing any product. For Meta Rooms at Facebook, it is important to first define the goals of the feature. This could include increasing user engagement, improving user retention, or generating revenue. Once the goals have been defined, the next step is to prioritize them. This could involve taking into account the potential impact of each goal, the feasibility of achieving each goal, and the resources required to achieve each goal. For example, if increasing user engagement is a top priority, the team may need to focus on improving the user interface or adding new features to keep users interested and engaged. Finally, setting NSM (non-star metric) for Meta Rooms is important to measure the success of the feature. The NSM should align with the goals of the feature and be a metric that can be tracked over time. For example, if the goal is to increase user engagement, the NSM could be the average time spent in Meta Rooms per user per week. It is important to regularly review and adjust the NSM as needed to ensure it accurately reflects the success of the feature. Overall, as a product manager, it is important to have a clear understanding of the goals of the feature, prioritize these goals, and set a measurable NSM to track the success of the feature.