> For the complete documentation index, see [llms.txt](https://messagebird.gitbook.io/applications/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://messagebird.gitbook.io/applications/audience/lists-and-segments/how-to/edit-the-setup-of-a-segment.md).

# Edit the setup of a segment

As your criteria or business needs change, you can update a segment's conditions without recreating it from scratch. Because segments are dynamic, contacts are re-evaluated against the new criteria and added to or removed from the segment automatically.

1. From the sidebar, select **Audiences**, then click **Lists & segments**.
2. Use the search bar to find a segment, or locate one from the list.
3. Click the three dots on the right hand side, then click the **Edit segment** button.
4. Make any edits to the audience using the filtering system. You can add or remove conditions and condition groups, change attribute or event filters, and switch between "and/or" logic, in the same way you would when [creating a segment](/applications/audience/lists-and-segments/quickstarts/create-a-segment.md).
5. Click **Save** > **Save segment**.

{% hint style="info" %}
Clicking **Save segment** will edit the existing segment. Clicking **Save as a new segment** will create a new segment with your new settings while preserving the original segment.
{% endhint %}

{% hint style="warning" %}
If the segment is used as a trigger in a journey or as an audience in a scheduled campaign, editing its criteria changes who that journey or campaign reaches going forward. Review any active journeys or campaigns that use the segment before making significant changes.
{% endhint %}


---

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