# How to use the Random Split feature?

With the Random Split feature, divide users into random groups to run tests, optimize your journey or set up a control group logic. Let's go through the steps together :sparkles:

{% stepper %}
{% step %}

## Add a trigger event and a Random Split

Select your trigger event, then add a Random Split at any step of the omnichannel trigger automation.

To do so, simply click on the **+** button and select **Yes/No Split:**

<figure><img src="https://509463063-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfiAYaWDWqtFZeXxyg67F%2Fuploads%2Fxvc9UX36GnrukIleNWGY%2FEnregistrement%20de%20l%E2%80%99e%CC%81cran%202025-09-08%20a%CC%80%2017.36.30.gif?alt=media&#x26;token=68fbdbeb-ca96-4058-af61-d1ede5ba2c1c" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

## Customize the branches

Customize the branches as you wish!&#x20;

Click on the **+** button again to add messages, delays, exit events or another split:

<figure><img src="https://509463063-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfiAYaWDWqtFZeXxyg67F%2Fuploads%2FiZMheqFgddqQ2hkTFBHL%2FCleanShot%202025-09-08%20at%2017.42.16%402x.png?alt=media&#x26;token=0d3a85f4-7ade-4263-b7a2-982d1159050a" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

## Adjust the percentages

Create from 2 to 4 branches and adjust the percentage of users for each of them. Just keep in mind that the sum of branches must always be 100%.

<figure><img src="https://509463063-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfiAYaWDWqtFZeXxyg67F%2Fuploads%2Fxgu78kemsIKWiVKWQMfp%2FEnregistrement%20de%20l%E2%80%99e%CC%81cran%202025-09-08%20a%CC%80%2017.45.06.gif?alt=media&#x26;token=7c350cb8-8e72-470e-a20b-6af4204922cb" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
The algorithm for randomization is **efficient for high volumes** but less so for very low volumes. If 30 people receive the automation and the automation has 3 branches (33%, 33%, 34%), you might not have exactly 10 people by branch.
{% endhint %}

🔍  With this feature, automations can get a lot bigger: to get a better overview, use the **mini-map** at the bottom-left corner of your screen to navigate and zoom in and out in the automation:

<figure><img src="https://509463063-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfiAYaWDWqtFZeXxyg67F%2Fuploads%2FJawrCYMbiZN6gxno4Ziw%2FCleanShot%202025-09-08%20at%2017.47.15%402x.png?alt=media&#x26;token=f78340ca-d4fc-4968-be52-4bab735ff984" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

You are now ready to create your own journey using the Random Split feature :rocket: