> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.cal.id/sitemap.xml
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# Single-Use or Time Based Private Links

**Private Links** generate unique, restricted booking URLs that expire after use or on a set date — without exposing your main profile.

| Why use private links

* **Protect your username:** attendees don't see your main profile or other event types.
* **Single-use security:** a link that regenerates after each use can't be reused to book you repeatedly.
* **Control distribution:** prevents your link from being shared around unintentionally.

| Set it up

1. Open **Event Types**, select the event, and open the **Advanced** tab.
2. Toggle **Private Links** **ON**.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_1pl1as7.png =1146x615)

3. Click the **gear icon** next to the generated link and choose an expiration:
* **Usage-based:** set **1 booking** so the link regenerates after use.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_pbz1qd.png =1146x615)

* **Time-based:** active only until a specific date.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_5nf3kg.png =1146x615)

4. **Copy** the unique URL, then click **Save**.

| How it works for the attendee

They see a clean page for that specific event — not your public profile or other events. Once they book (if set to 1 use), the link becomes invalid.

| Related articles

* [**Secret or Private Events**](https://help.cal.id/en/article/secret-or-private-events-etoi81/)