Audio input,output and power interface for Raspberry pi zero W

how to know which component should be placed in that particular area

Dear Designer, please let me know where can we find the BOM for this design

How much whatt speakers can be ised here ?And how much power of battery is needed .what is meaning of H1 meaning in gerber picture

Thank you for your participation in our 3rd PCB Design Contest. 7 Tips On How To Make Your PCB Entries Stand Out 1.Choose the appropriate color of soldermask and silkscreen for your PCB project. 2.In addition to the PCB images generated by our website, you can upload more photos of the project. 3.The more detailed project’s description is, the better judges and other makers understand it. FYI, it is a good idea to insert a video, currently our platform supports “YouTube” and “Vimeo”. 4.Open for Gerber download and BOM download. 5.Frequently share your entries to your social media and some open source forums, allowing more people to vote your entry, like it, download the Gerber file and also place orders for your work. 6.After uploading your entry, please constantly pay attention to its page. There will be other makers asking questions about your PCB project, and timely responses and multiple interactions will be additional points. 7.Earn PCBWay Beans for participating in this contest: *Submit a project entry: 100 Beans *A complete introduction(Including BOM, project guide, code files, production and marketing plans): 200 - 500 Beans *With video introduction: 1,000 Beans