Well the idea is that by right-clicking on a download, the option to change the name of the file appears, while it is downloading or not, when it is downloading the best approach would be to leave programmed the action of changing the name of the file when it is finished downloading, the utility is that sometimes I download many files with codenames, and then I forget what each thing corresponds to, and I have to keep checking what it was.
It is not something very important, but it is useful for me, and it can be useful for other people,