> For the complete documentation index, see [llms.txt](https://docs.siminsights.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.siminsights.com/teach/group-sessions.md).

# Group sessions

Run one simulation with your whole class at once. Learners join with a code and need no account.

A group session is a synchronous way to have your class run the same simulation at the same time. You start it, learners join with a five-digit pincode, and you watch their progress from one page.

Group Session Hosting is part of Skillful. See Access and pricing.

## Start a session

Two ways, same result:

* Explore the simulations in [Skillful](https://platform.siminsights.com/skillful), find the simulation of your choice, and press **Assign group session**, then **Start session**.

  <figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2F5b2M2YZurmjKLlhYhTMk%2FScreenshot%202026-09-04%20at%2012.06.01%E2%80%AFPM.png?alt=media&#x26;token=75dbf997-831f-43a6-a394-dda169e39821" alt="" width="563"><figcaption></figcaption></figure>
* Or alternatively, if you know the name of the simulation you want, go to [platform.siminsights.com/sessions](https://platform.siminsights.com/sessions), press **Host a session**, search for the simulation by name, and press **Start session**.

<figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2FLiiwh8pKPmqBnAce7xuv%2Fimage.png?alt=media&#x26;token=7e046bde-4f78-48c1-ae11-18f892b6bb55" alt="" width="563"><figcaption></figcaption></figure>

After hosting the group session a page will open with the join code.

<figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2FzZWYpF2tpfLMRIMcHOwM%2Fimage.png?alt=media&#x26;token=d77f4bab-3d93-4b1c-b1f8-a6f43732ea2a" alt="" width="563"><figcaption></figcaption></figure>

## Learners join

Give students the code. They can join two ways:

* **In a headset**: open HyperSkill, choose **Input pin code**, and enter the code.
* **On the web**: go to [launch.siminsights.com/join](https://launch.siminsights.com/join), enter the code and a name, and press **Launch**. The simulation runs in the browser.

A student who leaves the name blank is given one, such as Student 12.

<figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2FCVZQmJPsRoDs8n7ggiLG%2Fimage.png?alt=media&#x26;token=b2758161-b23b-4429-9383-2f67dedb14fc" alt="" width="375"><figcaption></figcaption></figure>

## Watch the session

The session page lists everyone who has joined: name, status, time in the simulation, and the device they are on. It updates on its own. Above the list are the totals: how many started, how many finished, and the average time to finish.

Open a learner's row to see their run in detail, including a comparison of their skills against the group average. Run detail also has the timeline of what they did, the event log and the replay.

<figure><img src="https://2704613365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FxYaaXoZ4YGbVdAnAhdcE%2Fuploads%2Fm9IM5DPyY03uWg5IvJ63%2FScreenshot%202026-09-04%20at%2012.08.48%E2%80%AFPM.png?alt=media&#x26;token=e559b2af-0c58-4d9c-b5ac-759db88e8e7e" alt="" width="563"><figcaption></figcaption></figure>

{% hint style="info" %}
Learners playing in a browser show as in progress even after they finish. Headset players show as finished. Use the finished count as a floor, not an exact figure, for a mixed class.
{% endhint %}

## End the session

Press **End session** when class wraps up. The code stops working for new joins.

## Afterwards

Every session you have hosted stays at [platform.siminsights.com/sessions](https://platform.siminsights.com/sessions), grouped by simulation. Group session analytics covers reading a finished session: how many started and finished, the average time, and the skill mastery for the session as a whole.