# Managing Milestones & Expected Documents

[Vault _Milestones_](/en/lr/24430/) specify important points in time at the _Study_, _Study Country,_ and _Study Site_ levels. During the course of a study, you accumulate documents of various types. By associating milestones with documents, you can measure milestone completeness by reporting on the status of the study's documents and those documents' milestones.

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      <p><strong>Note</strong>: This feature is only available on Clinical Operations Vaults.</p>
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## Viewing Milestone Hovercards

When you hover over a _Milestone_, Vault displays a hovercard for the record that allows you to quickly view a summary of the _Milestone_'s completeness.

### Enabling Milestone Hovercards {#enabling_milestone_hovercards}

Milestone hovercards are available in Clinical Operations Vaults with [Milestone Autocompletion](/en/lr/24430/#autocompletion) enabled. To enable milestone hovercards, navigate to the **Milestone** object in **Admin > Configuration > Objects**. In the _Fields_ tab, open the **Completeness** field and select the **Display in default lists and hovercards** checkbox. You can also select this option for the _% Complete_ field.

## Viewing a Milestone's Expected Documents

From a Milestone record, you can open a hierarchical view of all [Expected Documents](/en/lr/45400/) associated with that particular Milestone. Using this hierarchical view, you can easily see the status of all Expected Documents related to that milestone and drag and drop to upload new documents to the appropriate Expected Document record from this page.

### Configuring EDL Hierarchical View {#configuring_edl_hierarchical_view}

To make EDL hierarchical view available in your Vault, you can add a _View Expected Documents_ user action to your _Milestone_ or _Expected Document List_ object lifecycle.

For the lifecycle states you want to make this view available for, [configure a user action](/en/lr/30683/#how_to_define_state_entry_or_user_actions) with the **View Expected Documents** action.