otwarchive-symphonyarchive/app/views/challenge/gift_exchange/_challenge_navigation_maintainer.html.erb

<% if @collection.challenge.user_allowed_to_see_signups?(current_user) %>
  <li role="navigation"><%= link_to ts("Sign-ups"), collection_signups_path(@collection) %></li>
<% end %>
<% if @collection.user_is_owner?(current_user) %>
  <li role="navigation"><%= link_to ts("Challenge Settings"), edit_collection_gift_exchange_path(@collection) %></li>
<% end %>