.row
  .col-md-8
    = semantic_form_for(@conference, url: admin_conference_volunteers_update_path(@conference.short_title)) do |f|
      = f.action :submit, as: :button, button_html: {class: 'btn btn-primary'}
      %br
      %br
      = f.input :use_volunteers, label: 'Enable Volunteering'
      .row
        .col-md-6
          = f.input :use_vdays, label: false  
          = dynamic_association :vdays, "Volunteer Days", f
        .col-md-6
          = f.input :use_vpositions, label: false  
          = dynamic_association :vpositions, "Volunteer positions", f