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

# Manual segments

> Create and manage manual dimension segments when your model needs structure that does not come from a connected data source.

Manual segments let you segment drivers by a dimension you define by hand, without connecting a data source. Use them for planning structures such as departments, regions, products, or custom groups that you want to manage directly in Runway.

## Add manual segments to a database

Manual segments live in the database configuration editor and are available for databases without a data source.

<Steps>
  <Step title="Open the database configuration editor">
    Open the database you want to segment and open its configuration editor.
  </Step>

  <Step title="Open Segment by">
    Find the **Segment by** section. New databases without segments show **No segments**.
  </Step>

  <Step title="Add a segment">
    Click **Add segment**.
  </Step>

  <Step title="Find or create a segment">
    Use the **Find or create segment** search field.
  </Step>

  <Step title="Choose an existing dimension or create one">
    Select an existing dimension and choose **Add to Database**, or type a new name and choose **Create segment**.
  </Step>
</Steps>

Existing dimensions can show **Add to Database** or **Used by Database** depending on whether the database already uses them.

## How manual segments behave

Hand-made segments key the database the same way integration-derived segments do. After you add the segment, driver columns in the database can use the segment values for formulas, filtering, and dimensional driver references.

## Remove a segment

<Steps>
  <Step title="Open Segment by">
    Open the database configuration editor and find **Segment by**.
  </Step>

  <Step title="Remove the segment">
    Remove the segment from the same panel where it was added.
  </Step>

  <Step title="Review dependent work">
    Check formulas and driver references that used the removed segment.
  </Step>
</Steps>

## FAQ

<Accordion title="Do manual segments require an integration?" defaultOpen="false">
  No. Manual segments are for databases without a data source.
</Accordion>

<Accordion title="Are manual segments different from integration-derived segments?" defaultOpen="false">
  They are created by hand, but they key the database the same way integration-derived segment keys do.
</Accordion>

<Accordion title="Can I create a new dimension while segmenting a database?" defaultOpen="false">
  Yes. Type a new name in **Find or create segment**, then choose **Create segment**.
</Accordion>

## What's next

* [Segmenting drivers](/concepts/dimensions/segmenting-drivers)
* [Databases basics](/concepts/databases/databases-basics)
* [Dimensions basics](/concepts/dimensions/dimensions-basics)