Media / Create New upload screen text customization

[TheNexnecis]

New to Payload and I having some troubles with a request. I've been asked to update the text on the Media / Create New upload screen, which is using the default view from payload.

I've tried using the admin-description configuration option, but that does not display on the create new screen, even though according to this page, it should.

I think in order to accomplish this, I need to create a custom component to replace the upload screen with my own version. I do not want to overwrite the existing upload functionality, just add some text to the screen. I've got a generic component setup to replace the default upload screen.

But I simply cannot locate the existing code for uploads to add to my component to accomplish my task. If someone could be so kind to point me in the correct direction, I would very much appreciate it.