> For the complete documentation index, see [llms.txt](https://help.clabassistant.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.clabassistant.com/size-grading/activate-pattern-grading.md).

# Activate Pattern Grading

To grade a pattern, assign a size chart you have created for the relevant **Pattern Type**. Grading requires a plan that includes the **Grading Pack**.

If you do not have a chart yet, [create a Size Chart Template](/size-grading/manage-size-charts.md) first. Once assigned, a new chart needs its [grading rules](/size-grading/grading-rules.md) configured. If the chart already contains your rules, Clab applies them automatically to the pattern.

## Assign a Size Chart to a Pattern Project

1. Open the project and make sure a pattern type is selected.
2. Click on **Assign/Manage Size Chart** button on the top bar or in the **Preview Sidebar** to open the **Size Charts** window.
3. Select the **Size Chart Template** you want to use for the project’s **Pattern Type**.
4. Click **Assign** to confirm.

## Unassign Size Chart Template

1. Click on **Manage Size Chart** button on the top bar or in the **Preview Sidebar** to open the **Size Charts** window.
2. Click **Unassign** button in the Size Chart window to unassign the Size Chart Template

## Unassigning a Local Size Chart

When you unassign a Local (pattern-specific) Size Chart, the chart is permanently deleted.

**Local Size Charts** exist only within the context of the pattern they are assigned to.

For this reason, unassigning a local chart will remove it entirely and cannot be undone.

Before confirming the action, make sure that:

* The Size Chart is not needed anymore for this pattern
* Any required grading rules have been saved elsewhere (for example, as a template)

{% hint style="info" %}
If you want to keep the Size Chart for future use, consider [saving it as a Size Chart Template](/size-grading/manage-size-charts.md#save-a-local-size-chart-as-a-template) before unassigning it.
{% endhint %}

## Assign a chart with a different grading scheme

When a selected chart requires conversion to the pattern's grading scheme, the assignment dialog shows the target scheme and conversion information.

Review the proposed conversion before assigning the chart. If **Resolve conversion conflicts** appears, choose the source rule for each listed conflict, then complete the conversion and assignment.

Check the resulting rules and graded preview after assignment.