As far as i understand, the move and copy folder function in Box Web is combined from a role perspective. That means a user must have Co-Owner rights to move a folder but also to copy a folder. I agree that moving a folder means deleting the folder on the source location which may need elevated role. But copying a folder only needs read access on the source folder. So it would be great to separate these two functions and make the copy function available to users who have editor role on the target folder and have at least previewer (uploader) rights on the source folder.