Hi @roundcubefour ! As you are new to the community, when you get a chance, please introduce yourself here.
I’d also encourage you to add a real picture as your avatar because it helps build community!
This is doable! You are going to need to use queries and async_assign to feed the data back up to the parent form. See here: Using ODK-X XLSX Converter — ODK-X Docs for some details and examples of async_assign and let us know any follow-up questions after that.