How to rotate column headers in Grades

When there are many columns in the Grades, the table could become unclear. It might even be necessary to scrool right to see the current grade events.

There are several option to make the Grades table clearer.
The headers of the columns can be rotated thus fitting more columns on the screen:

Click on the "Show" button in the top menu. Tick the "Rotate column headers" option.

Another option to make the Grades table clearer is to sort the events into categories and select view by category.
How to sort the assignments in Grade book into columns