How do I assign an article to multiple classes?

1. Click on 'Content' in the upper navigation bar.
   
2. Select the article you want to assign.
   
   
3. Click the blue 'Assign' button.
   
4. Create your assignment and then click on the blue 'Assign' button.
   
5. Click on the 'Assign Again' button.
   
6. You'll be taken back to the assignment modal, where you can select another class to assign the article to.