Hi markturek

There are two ways you can provide access to the files for your users.

1. Move the files to a folder the user has access to (and your app service account has access to). This would move the file and potentially change ownership depending on who owns the target folder
   Assuming this is python: https://github.com/box/box-python-sdk-gen/blob/main/docs/files.md#update-file
    
2. Collaborate the user on the file in question. This would leave the file where it is but give the user access, although ideally you would stick with folder collaborations for scale
   https://github.com/box/box-python-sdk-gen/blob/main/docs/user_collaborations.md#create-collaboration
   
   There is no specific space limit for service accounts. You can set the limit on the user object
   https://developer.box.com/reference/put-users-id/#param-space_amount
   
   Hope this helps
   Rgds
   Peter Christensen, Platform Solutions Engineer, Box