How can I quickly copy panels from one Lt Lesson to another?

To quickly duplicate elements of one Lt Lesson in another, open an additional tab and log in to Lt within that tab. Open the two different Lessons, one in each tab.
When using the 'Copy' Feature of a Panel in the Lt Lesson in the first tab, the option to 'Paste' in the Footer Toolbar will also appear in the Lesson in the second tab, allowing you to transfer configured Panels from one Lesson to another, without having to re-create them manually: