To add charts to an Update, you will want to start in the Update Editor. On the right side you will see components that you can add to an Update. Click the "chart" icon as shown below:

From here, we will display the chart editor. You will have the option to use a previously created chart you have used in a dashboard or create an entirely new chart. Create or pick your chart, click "Save," and the chart will be display in the Update as shown below:

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