openproject/app/views/projects/list_members.rhtml

<h2><%=l(:label_member_plural)%></h2>

<% if @members.empty? %><p><i><%= l(:label_no_data) %></i></p><% end %>

<% members = @members.group_by {|m| m.role } %>
<% members.keys.sort{|x,y| x.position <=> y.position}.each do |role| %>
<h3><%= role.name %></h3>
<ul>
<% members[role].each do |m| %>
<li><%= link_to_user m.user %> (<%= format_date m.created_on %>)</li>
<% end %>
</ul>
<% end %>