As we covered in the What are Student Groups? tutorial, group lessons function pretty much the same way they do for individual students. It's easiest if you think of a group lesson as the matrix which the individual students in the group pull from for their lessons. They have their own lessons that track their progress separately, but if you make changes to a group lesson, it will affect the lesson for every student in the group. They're connected because they grow from the same roots, but each individual student lesson is a separate plant above ground. You can assign a lesson to a group that doesn't have one already on the My Students page. A group that doesn't have a lesson will have a grey bar and a link labeled Assign a Group Lesson.
Assigning a group lesson works exactly the same way as assigning an individual student lesson or creating a custom lesson template. You can choose to copy an existing lesson or choose a method preset.
If you remove a student from a group, the group lesson they were assigned is copied to an individual lesson for the student. This ensures that removing a student from a group doesn't interrupt their lesson. This also makes it easy to handle students that are making enough to progress that they require some tweaks to their lesson. You can remove them from the group and make the handful of changes you want to their lesson — having the group lesson copied automatically makes that a bit easier and means less work for you.
View the next tutorial: Group Lesson Plans & Guidance