> For the complete documentation index, see [llms.txt](https://docs.docontrol.io/docontrol-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.docontrol.io/docontrol-user-guide/risk-management/threat-model-coverage/external-collaborator-sharing/box-playbooks-for-external-sharing.md).
# Box playbooks for external sharing
To mitigate the risk associated with external sharing in Box, you can define automated workflows for these use cases:
* [Auto-expire external sharing](#auto-expire-external-sharing)
* [Remove collaborators on-demand](#remove-collaborators-on-demand)
{% hint style="info" %}
See the DoControl [demo video](https://youtu.be/TnJbsclIX_c) to configure auto-expire external sharing of files in Box. DoControl's best practices will help you to minimize data overexposure, and mitigate the risk of data loss.
{% endhint %}
## Auto-expire external sharing
1. In Workflows, select **Playbooks**.
2. Filter the playbooks according to the Box app, and select the **Auto-expire external sharing** playbook.
3. Give an action name.
4. Under the **Collaboration invite** event, define the relevant conditions:
* The `Get actor` condition is in a selected group.
* The `Get target` condition is **not** in one of your trusted domains.
5. Add any relevant conditions.
6. Customize the **Notify in Slack** action to notify the actor who shared the file.
7. Customize the **Wait** step for the length of time to wait until auto-expiring collaborators.
8. Under the **Remove collaborator** action, make sure the `Get asset ID` and `Get collaborators` macros are selected.
When someone shares a file externally in Box, the external collaborators are automatically removed after the defined waiting period.
## Remove collaborators on-demand
You can trigger an inventory action to remove collaborators from Box assets on-demand.
{% hint style="success" %}
You can customize [inventory actions](/docontrol-user-guide/workflows/inventory-actions-quick-actions.md) to meet your organization's requirements. When you trigger the inventory action, select the relevant workflow you created.
{% endhint %}
1. In Workflows, select **Playbooks**.
2. Filter the playbooks according to External sharing, and select the **Remove collaborators on-demand** playbook for Box.
3. Add any actions, such as **Notify by email** or **Notify in Slack**.
4. Save the workflow with a new name.
5. When you trigger the inventory action, select the relevant workflow you created.
---
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