# Sheet Content

## Line Groups and Line Items

[**Variables**](https://help.taglo.io/variables), [**Assumptions**](https://help.taglo.io/assumptions) and [**Metrics**](https://help.taglo.io/metrics) are all added to Sheets via [**Line Groups**](#line-groups) and [**Line Items**](#line-items).

<figure><img src="https://2847533834-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FVy65sax6FVoNo2UTlJ0x%2Fuploads%2Fj7KELxl7duB9sJsNDSmG%2Fimage.png?alt=media&#x26;token=a249845d-f464-46ee-856d-c781ccac1bc7" alt=""><figcaption><p>Line Groups and Line Items in Models (left) and Excel (right)</p></figcaption></figure>

### Line Items

All Variables, Assumptions and Metrics in your Layout are represented by a Line Item. As shown in the screenshot above, when a Variable or Metric has a [**Dimension**](https://help.taglo.io/dimensions) applied (the Variable `Gym members` in the example), you only need to add a single item to the Layout for all child items, and the summary line, to be generated in the Excel.

### Line Groups

Each [**Line Item**](#line-items) must be a child of a **Line Group**. Line Groups can be added to other Line Groups in a tree-like structure, and numbering will be automatically added, as in the example screenshots above.

## Dashboards

`Dashboard` Sheets contain a reference to a single [**Dashboard**](https://help.taglo.io/dashboards). In the [**Sheet wizard**](https://help.taglo.io/layout/sheets/..#sheet-setup-step), if you select the `Dashboard` Sheet type, you will be shown a step in which you can choose a Dashboard to display. Only one Dashboard can be shown on any single Sheet.