That's a good question! I'm also interested in the answer.
In the ca_tour_default_html.php, you can display a list of the tour_stops belonging to, with this code. It displays labels of tour stops and their coordinates:
<ul>
{{{<unit relativeTo="ca_tour_stops" delimiter=" " sort="ca_tour_stops.idno" sortDirection="ASC" restrictToTypes="primary,secondary" ><li><l>ca_tour_stops.preferred_labels</l>: ca_tour_stops.georeference</li></unit>}}}
</ul>
On a map of a tour, you can put a single pin, but I have never managed to put a set of pins or a polygon on it (whereas, normally, this should be possible), nor the pins of corresponding tour stops.
