If you click on a learning path you will have the option to make the path dashed. This will signal to your students that the material in the node at the end of the dashed line is voluntary to take part of.
A dashed learning path
If you click on a learning path you will have the option to make the path dashed. This will signal to your students that the material in the node at the end of the dashed line is voluntary to take part of.