By assigning a metadata set to an archive, you control which metadata fields users can edit in that archive (assuming they are allowed to edit metadata in the archive in question, of course) and which taxonomies they will have access to.
What's more, users who are allowed to upload files to the archive will be required to fill in metadata in accordance with the field requirements specified in the metadata set.
Assigning a metadata view to an archive
- From the Tools menu (cogwheel icon), go to Site Configuration > Archives.
- Select Edit to open the details of an archive.
- On the General tab, select a metadata view from the drop-down list.
- Select OK to save your changes.