Once you’ve created a section, your students will be able to self-enroll in this section through the VUMIE lab. They can do this by clicking Account > License & Section:
From here, they can search for your institution (it will match whatever institution name you entered when signing up for a VUMIE instructor account):
Finally, they can pick the proper section and click Submit. From this point, you’ll be able to assign activities to them and see their work through the Admin area.