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

# Reuse a saved segment across campaigns

> Save an audience definition once, then select it in any campaign.

Most audiences get used more than once. Rather than rebuilding the same criteria inside every campaign, define the segment once on the **Segments** tab and select it from the Member Segment block whenever you need it.

## What you'll build

```mermaid theme={"system"}
flowchart LR
    A[Saved segment] --> B[Member Segment block]
    B --> C[Rest of the canvas]
```

## Save the segment

<Steps>
  <Step>
    ### Open the Segments tab
  </Step>

  <Step>
    ### Add a new segment

    Select **Add new Segment**.
  </Step>

  <Step>
    ### Name it and set the conditions

    Give it a name a colleague would recognise, then build the criteria. The condition builder is covered in [Audiences & Data](/business-documentation/audiences-and-data).
  </Step>

  <Step>
    ### Save

    The segment now appears in the list on the Segments tab.
  </Step>
</Steps>

## Use it in a campaign

<Steps>
  <Step>
    ### Start a new campaign

    Open the **Campaigns** tab and select **Add new campaign**.
  </Step>

  <Step>
    ### Add a Member Segment block to the canvas

    See [Block reference](/business-documentation/journeys/block-reference).
  </Step>

  <Step>
    ### Open the block

    Double-click it.
  </Step>

  <Step>
    ### Select **Use predefined segment**

    Find your segment in the picker and select it.
  </Step>

  <Step>
    ### Select **Save segment**

    The block is now driven by the saved segment.
  </Step>
</Steps>

## Related

* [Journey canvas](/business-documentation/journeys/journey-canvas)
* [Block reference](/business-documentation/journeys/block-reference)
* [Audiences & Data](/business-documentation/audiences-and-data)

<Info>
  **Migration note.** Rewritten from `Segmentation > User exercises > Create new segment and use it in the campaign`. The original was phrased as a training exercise and linked into the separate *CST User Manual* wiki; those links now point at the pages that will hold the same content here.
</Info>