Where is the "Archive URL" button and how does it work?

External URLs and external-source video media are archived from the Digital Asset Inventory page, not from direct manual entry.

1. Locate an in-use external URL (or remote video) row. Its Operations cell shows an Archive URL link.
2. Click Archive URL. The Manual Archive Entry form opens with the URL and title prefilled and the asset type locked to External Resource.
3. Confirm the content date attestation, choose visibility, and click "Add to Archive Registry".

The link is hidden when archiving or manual archive entries are disabled, or when an active archive already covers the URL, in which case a View archive link is shown instead. Direct entry of an External Resource from the Add Manual Archive Entry form is blocked.