Have you ever had students finish a course and still need something to work on before the end of the year or semester? The first option is to always have your students work on the supplemental materials at the end of the course. Here is an article on how to access supplemental materials "How can students and teachers access Supplemental Materials?".
Sometimes students have already completed the supplemental as well, so what now? That is what is awesome about CodeHS. We have multiple courses that your students can continue to work on if they have already completed your main course, and it only takes a few clicks to add additional courses to your section. Below are a couple of screenshots walking you through adding additional sections.
From the section home page click on the gear in the upper right corner. This will take you to your section settings page.