## Introduction

Custom metrics let users capture application-specific data or client-side system data. The built-in metrics collected by Cloud Monitoring can give user information on backend latency or disk usage. Custom metrics are created by the user by using derived formulas.

### Menus available on metric node

- Merge metric with active widget: It will merge selected metrics on the active widget.
- Add Derived Metrics: It opens the derived window to create a new derived metric.
- Show Description: It opens a page that shows the selected metric description and metric group name and description.
- Remove Metric: It removes selected derived metric.
- View Expression: It shows the expression of the derived metric on the new page.

### Menus available on metric group node

- Merge metric with active widget: It will merge selected metrics on the active widget.
- Add Derived Metrics: It opens the derived window to create a new derived metric group.
- Show description: It opens a page that shows the description of all metrics in that group and the metric group name and description.
- Remove Node: It removes selected groups.