Hi @DanielleBrodzik ...
The directions from @DrNufer are correct. In your course, go to the "Settings" course navigation menu on the left side of your screen. By default, you will be on the "Course Details" tab once on the "Settings" screen. Then, scroll down the screen just over half-way, and below the options for "Default due time" and "Language", there is an option for "File Storage". In the light blue box of this Guide, How do I set details for a course? - Instructure Community (canvaslms.com), it says, "...may allow you to manage...". The keyword here is "may". You may or may not be able to edit the number here. If not, you'd need to have a conversation with your school's Canvas administrator about this.
I hope this will be of some help to you. Sing out if you have any other questions...thanks.