To move a pre-qualification (PQ) question from the screening section to the body of your survey simply grab the grey tab and drag and drop into a new space.
Moving a question from the body of a survey to the screening section works the same way. Grab the grey tab at the right of the question and move the question to the screening section. Since screening questions are only either radio buttons or check-boxes if you are moving any other question type the system will convert the question.
Please note that certain more advanced question types might not be able to move from the body of the survey to the screening section. Convert the question to either a radio button or checkbox question before dragging and dropping so you don't lose your text.