Default Upload to FTP External Storage (instead of local)

How do I just drag and drop files on the home screen and have it upload to remote FTP External Storage (right now it says “You don’t have permission to upload or create files here”)?

Nextcloud v20.0.0 – Might you know how I can make it so whenever any file is uploaded it’ll automatically be uploaded to remote storage? I disabled local storage by setting quota to 0. When I log into Nextcloud I have to click a couple extra times to get to the external storage folder though.

UPDATE: I found out how to disable local storage I believe because I edited user and set Quota to 0.