join works

rowers/templates/workout_join_select.html

@@ -147,6 +147,9 @@
     <p><b>Warning: You are on an experimental part of the site. Use at your own risk.</b></p>
     <p>Select two or more workouts on the left,
       and press submit</p>
+    <table>
+      {{ joinparamform.as_table }}
+    </table>
   <div class="grid_1 prefix_2 suffix_1">
     <p>
   {% csrf_token %}