---
alias: tutorials-exception-management-manage-chart-rules
glightbox: false
description: "Charts provide rules for monitoring process variation and triggering actions based on defined standards"
---

# Chart Rules

Charts are often used as a quality control tool that monitors the variation of a parameter being captured in a given process step. When using these charts, also known as Statistical Process Control (SPC) charts, you can define rules that define quality standards, which can automatically trigger a given **Protocol** when finding any deviation. Optionally, you can manually open a **Protocol Instance** right through the SPC chart.

!!! info
    For more information on Charts and SPC, see:

    * [[user-guide-chart-index]]
    * [[user-guide-spc-rules-index]]
    * [[tutorials-spc]]

In the video below, a SPC chart was configured with some Nelson rules linked with a **Protocol**.

<!-- Video filename: manage_chart_rules.mp4 -->
{% set video_id = '7ff4b0db1c8547fd9427f61c3934a0e8' %}
{% include-markdown 'includes/cloudflare_stream.md' %}

!!! info
    To continue learning, see other use cases:

    * [[tutorials-exception-management-inspection-plan-settings]]
    * [[tutorials-exception-management-manage-error-limits]]