Where to write the Solution during the actual Exam? (Based on Pearson Demo)

Has anyone tried walking through the demo Pearson released? There is a “SOLUTION” button on the top left corner of the question page; also after the question, a line read as “show all work below” is presented. So I am wondering if we have to write the solution in the pop-up window after clicking the “SOLUTION” button.

They said on the call you do not. And they will remove that wording from the test.

The solution button you see in the demo is simply the solution to the practice question.