In the contextual menu, by clicking on My graphs, you will have access to all graphs you created.
In this modal you can:
Search: to find a specific graph, just click on the name in the search bar on the modal top;
Exclude: passing the mouse over the graph, two icons will appear. Clicking on the trash box , it will be excluded;
Duplicate graph: clicking on the second icon , which appears by passing the mouse over the graph, it is possible to duplicate the graph, creating a copy.