To add your own questions into an assessment, locate the Vendor Management menu option.
From your Vendor Management menu, select Builder.
This will bring you to the Assessment Creation page. Here you can build your own assessments and assign them directly to your vendors. In the right-most column you'll see options for adding questions. Locate the Custom Questions tab and select Add New Custom Question.
Next, choose whether your question will be multiple choice or check boxes.
This will bring you to the Create a New Custom Question form. Here you can fill out the Question, an optional description, and the choices for answers.
Once you've completed the form, select Save Question at the bottom.