From the GO application dashboard, navigate to the Gradebook tab.

To collapse the Gradebook categories (such as Homework, Quiz, Project, etc.), the teacher can select the "Collapse Categories" checkbox. This is particularly useful when categories contain numerous assignments that need to be collapsed. The Teacher will be able to see the Gradebook in a collapsed format as shown in the accompanying image below.

The categories can be expanded by the teacher, by unchecking the Collapse Categories checkbox. 

Teachers can also collapse and expand the gradebook categories manually by clicking the arrow sign at the end of the categories list. Clicking the "+" sign, along with the assignment count displayed above the arrow, will expand the categories (e.g. +36) .

Clicking the "-" sign, along with the assignment count displayed above the arrow, will collapse the categories (e.g. -36) .