Thanks. I see on group-user-count appears on line 55.
Does this mean that if I wanted to, say, add a line right before the group-user-count line, I would have to copy the entire 100 lines of that index.hbs file into my code and insert it like this:
<script type="text/x-handlebars" data-template-name="groups/index">
[100 lines here]
</script>