I did not really understand how to download the files from the repository
according to this statement: So in the quotes below how can do it exactly ?

If you choose a vulnerability that does not have cached files, it is not
automatically deployed to devices. "You must download the files from the
patch repository and they must be packaged by ZENworks Configuration
Management". Then the icon turns blue. To initiate an immediate download
of these packages, select the Update Cache option from the Actions menu.