In case you want to create another chart with the same configuration (e.g., to reuse common settings for chart series), you can do it differently in reports and gadgets.

Reports

Step 1. Open the target report and click on the Duplicate button.

Step 2. Save the new report.

Gadgets

Step 1. Export the settings from the target chart. The settings will be exported as a .json file.

Step 2. Select the .json file and click Import.