Amazon Seller Shipping and Returns Setup

We are seeking an experienced professional to assist us in configuring our Amazon Seller account, specifically focusing on shipping rates and return policies. Our Seller Account is already established, and the relevant policies have been uploaded. We require your expertise on an hourly basis to optimize our Amazon setup and subsequently aid in testing its integration with our warehouse management system. Initially, we would like you to assess the necessary tasks upon logging in and provide a comprehensive quote for the required work. Your proficiency in this area is essential for a successful partnership.