This option is only available for WooCommerce License Keys (extended) premium plugin.
How to access the management page?
From the management page
Click a purchased license key code from the results list will to access the “Single Management Page“.
From admin’s “Orders” page
Click the “Manage license keys” button, located at the bottom of the order’s item list, when reviewing an order (in WordPress admin) that has at least one license key.

This button will redirect you to a page with a cleaner list of the license keys available in the order.

On this page, you can quickly review the products, the expiration, the limitation and the number of activations.
Click a license key code to access the “Single Management Page“.
License Key Management Page
The “Single Management Page” will display an edit form and the activations related to the license key.

You can edit the license key properties and click the “Update” button to save the changes. You can click any of the “Deactivate” buttons to deactivate customer’s activations.
When the Analytics module is enabled, an additional “API Activity” box will appear and will display the interactions between the license key code and your API.

Activations with ID 404 are coming from a development environment.