From your dashboard, click in the upper right on the dropdown menu below your name, and click on Account.
Next, click on Security Questions.
Next, from the 3 dropdown menus, change your security questions and update answers.
When you've updated your questions and answers, click Save.
You'll see the following Profile message, and you'll click Close.
You can continue working in the Helper. Your security questions (and answers) are updated! Good on you!