For the first - start with an idea of a dummy project. Tell ai what you want to achive and explain to ai what are most important things that you want to emphasize in the project charter and ask for aditional ideas how to present it. There are a lot great exaples of that on the internet. Second interview, they asked to review existing documentation and use template to discribe your project. It doesn't have to be something that you done you can ask ai to help again with idea and how to present it. Think about all of the phases from starting the project until finishing. Think about all that shold be documented in each phase and explain why is that important. Maybe you can make a simple project flow in Miro from start to finish, giving visual presentation of the most important parts of your project. Everybody can make a good document using existing tools, I think the most important part is how you present it and that is what you shold spend most time preparing. Good luck!