app/views/organisations/_organisation_admin_display.erb
<% if org.users.empty? %>
<div>This organisation has no admins yet</div>
<% else %>
<div>
Organisation administrator emails:
<ul>
<% org.users.each do |superadmin| %>
<li><%= superadmin.email %></li>
<% end %>
</ul>
</div>
<% end %>