Who can edit and delete shared files

The person who uploaded a file can edit and delete it. So can anyone with the Add / Edit / Delete All Files permission in that file's production. Everyone else who can see the file can open and download it, but not change it.

Open the file's details and click Edit File Info to change its name, folder, description, or who it's shared with (Share with All Users or Share with Specific Groups). Add New Version uploads a newer copy and keeps the old ones in the file's version list.

Delete File (All Versions) removes the file and every version of it. When asked "Do you want to delete all versions of the file?", click Ok only if you're sure.