To ensure that there are enough drivers for the number of deliveries at any given time and area, a product manager can use a combination of demand forecasting and supply management strategies. Demand forecasting involves using historical data, market trends, and other relevant factors to predict the expected demand for ride-hailing services in a particular area and at a particular time. This can help the product manager determine how many drivers will be needed to meet this demand. Supply management strategies involve recruiting and retaining drivers to ensure that there are enough drivers available to meet the predicted demand. This can include incentives for drivers to work during peak demand times, as well as strategies for driver retention and recruitment. To implement these strategies effectively, a product manager may need to work closely with data analysts, operations teams, and marketing teams to gather and analyze data, develop driver recruitment and retention programs, and create targeted marketing campaigns to encourage more drivers to sign up for the platform. Overall, the key to ensuring there are enough drivers for the number of deliveries at any given time and area is to use a data-driven approach to demand forecasting and supply management, while also working to create a positive driver experience and a strong driver community.