Just select the highlighter question and you will get a demo question type along with options. Also, you may select sentences from web and assign the categories.

Thanks grahulp5 for taking the time to answer my question but all I see when I select a highlighter question is 'Click to write the question text'.
What I'm looking for are instructions for a respondent to answer the question - how to select a word/group of words, how to change your selection - both desktop and mobile.
Thanks

Here is the link for instructions:
https://www.qualtrics.com/support/survey-platform/survey-module/editing-questions/question-types-guide/specialty-questions/highlight/

Hi grahulp5
Thanks again for your response but this shows how to set up the highlight question but not what to say to respondents as an instruction for completion. Using their example text 'Please indicate the words or phrases....' assumes that people know how to highlight text - I guess most people will but I was looking for instructions which would apply to all people, whatever their tech knowledge.

You could add instruction like "Please select the words/phrases which you feel more liked/disliked..." and so on to make respondents identify this question type better.