> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kameleoon.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Set up a trigger in a campaign

> Add a trigger condition to an experiment to control when your campaign activates based on visitor events.

## Create a new trigger

Read [this article](./create-a-trigger) to learn how to create a trigger.

## Set up a trigger in an experiment

<Note>
  For more information on defining segments and triggers, refer to [this](../../experimentation/web-experimentation/configure-and-launch/define-your-experiments-targeting) article.
</Note>

To set up a trigger in an experiment:

1. Click **Targeting** > **Target specific visitors** in the Graphic editor's finalization panel.

<Frame>
  ![](https://storage.googleapis.com/kameleoon-storage-documentation/user-manual/images/assets/triggers/set-up-a-trigger-in-a-campaign/0.png)
</Frame>

2. Select **Trigger** from the list of conditions.

<Frame>
  ![](https://storage.googleapis.com/kameleoon-storage-documentation/user-manual/images/assets/triggers/set-up-a-trigger-in-a-campaign/1.png)
</Frame>

3. Select the event with which you want to associate your trigger.

<Frame>
  ![](https://storage.googleapis.com/kameleoon-storage-documentation/user-manual/images/assets/triggers/set-up-a-trigger-in-a-campaign/2.png)
</Frame>

4. Click **Next** to associate the trigger with your experiment.

Click the **X** icon to dissociate a trigger from the experiment. You can add multiple conditions to your experiments.