Link and Unlink Graphs on a Dashboard
You can link all of the graphs on your dashboard together, so that when you zoom in or zoom out on one graph, all of the other graphs zoom in or zoom out at the same time. You can unlink graphs to limit changes to one graph.
To link or unlink graphs on a dashboard
Open the CloudWatch console at https://console.aws.amazon.com/cloudwatch/.
In the navigation pane, choose Dashboards.
On the Actions menu, do one of the following:
To link all graphs together, select Link graphs.
To unlink all graphs, clear Link graphs.