> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.cal.id/sitemap.xml
> Use this file to discover available pages before exploring further.
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# How to use Offer Seats in Cal ID

**Offer seats** turns a one-on-one meeting into a **group session** — perfect for webinars, classes, or workshops where several people book the same slot.

| Why use it

* **Host group sessions:** classes, webinars, or team training at once.
* **Efficiency:** cover the same material with several people in one meeting.
* **Automatic capacity:** once all seats fill, the slot hides so it can't be overbooked.

| Set it up

1. Open **Event Types** and click the event.
2. Open the **Advanced** tab.
3. Toggle **Offer seats** **ON** and set the maximum number of seats.
4. Click **Save**.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_181lgk9.png =1136x615)

| How it works

The slot stays visible for others to book until all seats are filled — e.g., with 20 seats and 13 taken, guests may see how many spots remain.

![](https://storage.crisp.chat/users/helpdesk/website/-/6/f/1/c/6f1c2c7b8034d000/image_5obi7z.png =1257x615)

* Each booker gets their own confirmation and calendar invite.
* The slot disappears once seats are full (or if you mark yourself busy).

| 💡 Host a one-time event

To lock all seats into a single date and time (a webinar or GD), see [Scheduling a One-Time Group Event (Webinars & GDs)](https://help.cal.id/en/article/scheduling-a-one-time-group-event-webinars-gds-n84mni/).