I have multiple correlated XSDs that needs to be uploaded in order to create a large library, but I haven't had any option to do so on the interface. The option to select XSD is only limited to one file.
Is there a way to go around this issue?
You need to create a 'Super Schema' which will include or import all of your top level schema.
Please see the knowledge base article: Liquid XML Data Binder - Super Schema