<%= form_tag() do %>
<table class="dmp_table">
  <thead>
    <tr>
      <% all_columns.each do |column| %>
        <th><%= label_tag(column, column.to_s.humanize) -%></th>
      <% end %>
    </tr>
  </thead>
  <tbody>
    <tr>
      <%
         all_columns.each do |column|
           html_opts = selected_columns.member?(column) ? { checked: 'checked' } : nil
      %>
        <td><%= check_box_tag(column, true, html_opts) -%></td>
      <% end %>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td colspan="<%= all_columns.length - 2 -%>"></td>
      <td><%= link_to(t('helpers.cancel'), projects_path, class: 'btn btn-primary') -%></td>
      <td><%= submit_tag(t('helpers.save'), class: 'btn btn-primary') -%></td>
    </tr>
  </tfoot>
<% end %>

<%= form_tag() do %>
<table class="dmp_table">
  <thead>
    <tr>
      <% all_columns.each do |column| %>
        <th><%= label_tag(column, column.to_s.humanize) -%></th>
      <% end %>
    </tr>
  </thead>
  <tbody>
    <tr>
      <%
         all_columns.each do |column|
           html_opts = selected_columns.member?(column) ? { checked: 'checked' } : nil
      %>
        <td><%= check_box_tag(column, true, html_opts) -%></td>
      <% end %>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td><%= submit_tag(t('helpers.save'), class: 'btn btn-primary') -%></td>
      <td><%= link_to(t('helpers.cancel'), projects_path, class: 'btn btn-primary') -%></td>
    </tr>
  </tfoot>
<% end %>

Move configure buttons to the left to match button position on other table
Move configure buttons to the left to match button position on other table
