---
title: How to set up and use CommBox Lobby on the Classic S5
description: Learn how to set up CommBox Lobby on the Classic S5 to create a cyber-secure shared screen environment. Step-by-step guide.
---

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1. [Knowledge Base](https://support.commbox.com.au/knowledge?hsLang=en)
2. [CommBox Classic S5](https://support.commbox.com.au/knowledge/commbox-classic-s5?hsLang=en)
3. [How To](https://support.commbox.com.au/knowledge/commbox-classic-s5?hsLang=en#how-to)

# How to set up and use CommBox Lobby on the Classic S5

## Learn how to enable CommBox Lobby on your Classic S5 to create a cyber-secure shared screen environment — every session starts fresh and your data is automatically cleared when it ends.

**Applies To**

CommBox Classic S5 — All models (CommBox OS Experience required)

**Step-by-Step Instructions**

Step 1: Open CommBox OS Experience Settings

- From the home screen, tap the CommBox Experience app icon to open the CommBox OS Experience settings.

Step 2: Enable CommBox Lobby

- Tap Accounts and Security, then tap Lobby.
- Toggle Enable Lobby to the on position.

Step 3: Choose how users start a session

- Once Lobby is enabled, select your Access Policy: 
    - Express Session & Accounts — guests can start a session without logging in, and CommBox Account holders can log in for a personalised experience.
    - Accounts Only — only users with a CommBox Account can start a session.
    - Express Only — all users start as guests, no login required.

Step 4: Configure optional security rules

- Allow Input Switching from the Lobby — lets users switch to an input (like HDMI) directly from the Lobby screen.
- Auto-Return to Lobby Timer — automatically returns the screen to the Lobby after a period of inactivity on an input.
- Auto-Return to Lobby Timeout — sets how long the screen waits before returning to the Lobby.
- Return to Android on No Signal — returns to the Lobby the moment a connected device goes to sleep or is disconnected.

Step 5: Save and reboot

- Tap Save and exit the settings. The screen will reboot to apply your changes.

💡 Tip: Use Accounts Only mode in environments where student privacy is critical, such as BYOD classrooms or shared staff rooms.

💡 Tip: Lobby is the most secure setup for any shared screen. Even if a user forgets to log out, everything is wiped automatically at the end of their session.

**Troubleshooting / What to Do If It Doesn't Work**

- Lobby screen is flashing or restarting — this was a known issue resolved in the Goanna firmware update. Go to Settings \> System \> System Update and install the latest update.
- Users can't start a session — check that your Access Policy is not set to Accounts Only when you have guests without CommBox Accounts. Switch to Express Session & Accounts if needed.
- If you need help, log a ticket on the Support Portal in Knowledge Base: [https://support.commbox.com.au/knowledge/kb-tickets/new](https://support.commbox.com.au/knowledge/kb-tickets/new?hsLang=en)

**Video Tutorial** Refer to the CommBox Training Hub for guided videos at [www.commbox.com.au/training-hub](http://www.commbox.com.au/training-hub).

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