Not sure if this fulfils all your requirements, but you can check out our FedEx Rates, Labels and Tracking app that helps you handle FedEx SameDay. You can add the FedEx SameDay account, choose the serviceable areas (similar to the local delivery), choose the required FedEx SameDay rates to be displayed at checkout for your customers, print shipping labels, choose a cut-off time and handle the complete shipping process. You can look into this guide to get a better insight on the same. Also, the app comes with a 15-day free trial. So, you can try the app and contact us regarding your exact use case or if you require any assistance.