Write access to only one folder

I would like to create a read-only share but with a folder inside where it is possible to upload files.
It’s possible? Or do I necessarily have to create two links?
Nextcloud 27.0.2.

Two links if you want anonymous share. If you use users you can give the user 0 GB quota and two groupfolders (read, edit). Or app goups and share two folders (read, edit).