Rating question

Hi a client wants a survey added at the beginning of the quiz to see how users rate their likely ability (to recognize bird calls). I thought it would be easy to  use this option:

Quiz > Question Slide > Rating Scale (Likert)).

But it is grayed out, I can't find any way to activate it. I even tried adding a slide to a new project and it was grayed out. Can people confirm it is an option available to them and if someone knows a setting I need to change or a precondition or a 'you can't have there thing together' situation, please let me know.