From D2L, open the Course Reserves module.
You will see a screen with two options:
If you’re teaching multiple sections of the same course that will use the same list, connect one list to all of your D2L sections.*
Note: you will also need to add the Course Reserves module to your other sections’ D2L site.
*Do not connect a previous list to your current/upcoming course. Lists expire at the end of the quarter in which they were used so sharable links will not work and physical materials will not be available to your current course. Connect only current lists.