Using call outs or pull quotes in InDesign allows you to highlight a certain piece of content for your viewer.
Begin with styling your text – following any style guides already established. Experiment with using text features or things like large size quotes.
Next, use the text frame options to build space around the grouped text. You can alter the spacing and where the spacing occurs.
If you want, this is a good time to experiment with other ways to help the text stand out (gradient box, stroke box (different options) or stacked boxes.