The "Copying a dashboard" option is available for users who have editor's rights or are the owner of the dashboard.
A duplicate of the dashboard with all widgets is created. A dialog is displayed with the options to update the dashboard name and description.
If the user has editor rights, copying the dashboard makes him the owner of the new dashboard.
Navigate to the dashboard.
Select the Meatball Menu in the top right corner.
Choose Copy from the dropdown.
Update the name and description of the dashboard and click Confirm.
A new dashboard has been created, then the user is automatically redirected to that dashboard.