The Grades tab in your Canvas class (AKA Gradebook) keeps track of the points your students have earned on any graded assignment or quiz given through the Canvas class.
You can change how the gradebook is ordered using these options
The Gradebook menu allows you to switch between Gradebook, Individual, and Gradebook History view
In Gradebook History you can pull up a history of all submissions for a student and/or assignment based on "Student, Grader", "Assignment", "Start Date", and "End Date".
Settings for the gradebook can be accessed using the gear in the top right corner
A detailed overview of the settings is given at the bottom of this page.
If you selected a student their information will appear here
If you have selected an assignment its information will be displayed here, along with assignment specific actions.
You can set automatic grading policies for late submissions here
When done changing setting make sure you click Update in the bottom right to save the changes.