---
title: Mark your barriers with Critical Control
description: "![](https://bowtiemaster.com/wp-content/uploads/2024/12/Icon-Language-v2.png) ## Troubleshooting 4 - [User hasn’t received onboarding email](https://bowtiemaster.com/docs/user-hasnt-received-onboarding-email/) - [The share link is blank](https://bowtiemaster.com/docs/the-share-link-is-blank/) - [I can’t access my account](https://bowtiemaster.com/docs/i-cant-access-my-account/) - [Unable to build a new diagram or create a new project](https://bowtiemaster.com/docs/unable-to-build-a-new-diagram-or-create-a-new-project/) ![](https://bowtiemaster.com/wp-content/uploads/2024/12/Icon-Clipboard-v2-127x150.png) ## How-to Guides 39 -…"
url: "https://bowtiemaster.com/docs/mark-your-barriers-with-critical-control/"
updated: "2025-09-19"
category: "How-to Guides"
---

# Mark your barriers with Critical Control

![](https://bowtiemaster.com/wp-content/uploads/2024/12/Icon-Language-v2.png)

## Troubleshooting

   4

- [User hasn’t received onboarding email](https://bowtiemaster.com/docs/user-hasnt-received-onboarding-email/)
- [The share link is blank](https://bowtiemaster.com/docs/the-share-link-is-blank/)
- [I can’t access my account](https://bowtiemaster.com/docs/i-cant-access-my-account/)
- [Unable to build a new diagram or create a new project](https://bowtiemaster.com/docs/unable-to-build-a-new-diagram-or-create-a-new-project/)

         ![](https://bowtiemaster.com/wp-content/uploads/2024/12/Icon-Clipboard-v2-127x150.png)

## How-to Guides

   39

- [Build your first bowtie diagram](https://bowtiemaster.com/docs/build-your-first-bowtie-diagram/)
- [Diagram Metadata](https://bowtiemaster.com/docs/diagram-metadata/)
- [Diagram risk matrix](https://bowtiemaster.com/docs/diagram-risk-matrix/)
- [Create your first project](https://bowtiemaster.com/docs/build-your-first-project/)
- [Customise the view](https://bowtiemaster.com/docs/customise-the-view/)
- [Reset password](https://bowtiemaster.com/docs/reset-password/)
- [Resend onboarding email](https://bowtiemaster.com/docs/resend-onboarding-email/)
- [Managing Users](https://bowtiemaster.com/docs/managing-users/)
- [Download an image or pdf](https://bowtiemaster.com/docs/download-an-image-or-pdf/)
- [Share a diagram](https://bowtiemaster.com/docs/share-a-diagram/)

## Mark your barriers with critical control

##### Bowtie Master makes it easy to identify your critical controls through marking specific barriers. The steps below will show you how to use the feature.

 

**Step 1: In your diagram, click on the barrier you wish to mark as critical control. **

**Step 2: In the Element Description Box, click on the ! icon. This will mark your barrier with critical control.**

![](https://bowtiemaster.com//wp-content/uploads/2024/12/Critical-Barrier-3.png)

**A critical control icon will appear on top of the barrier, indicating its new status:**

![](https://bowtiemaster.com//wp-content/uploads/2024/12/Critical-Barrier-1.png)