Rename a Graph on a CloudWatch Dashboard
You can change the default name that CloudWatch assigns to a graph on your dashboard.
To rename a graph on a dashboard
Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
In the navigation pane, choose Dashboards.
Choose a dashboard.
Hover over the title of the graph, choose Widget actions, Edit.
On the Edit graph screen, in the lower half of the screen, choose the title of the graph.
For Title, type a new name, choose Ok (check mark), and then in the lower-right corner of the Edit graph screen, choose Update widget.