Is the Timeline Editor able to be open upon double clicking the timeline node in V4.13.2?

Hi there,
I happend to have encountered a problem using the Unreal Level Blueprint scripting. From the UE4 documentation you’ve provided, it says “Timelines can be edited by Double-clicking on the Timeline node in the Graph tab or on the Timeline in the My Blueprint tab. This opens the Timeline Editor in a new tab.”. When I try double clicking on it, it doesn’t open up anything. Can you please advise me on what should I do?

Best regards,
Ezra Tan