Nobody wants to entirely take over someone else's lesson. How most teachers work with LessonUp is by collecting slides from different lessons and adding some of their own slides.
You can add specific slides from other lessons to your own lesson from within the lesson editor. You can also search in the lesson library, save the lesson to your own account and later copy the slides to your own account.
When you save someone else's lesson, a copy of the lesson is made.
This means you never edit someone else's lesson.
Search for a slide from the editor Save a lesson to your account