Tell SearchWP to use the 2nd occurrence of the search term when finding highlights

functions.php

<?php

// Use the second occurrence of the search term when finding what to highlight.
function my_searchwp_term_highlight_occurrence( $occurrence ) {
  return 2;
}

apply_filters( 'searchwp_term_highlight_occurrence', 'my_searchwp_term_highlight_occurrence' );