gnome-control-center/panels/system/users/cc-users-page.ui

<?xml version="1.0" encoding="UTF-8"?>
<interface>
  <template class="CcUsersPage" parent="AdwNavigationPage">
    <property name="tag">users</property>

    <property name="child">
      <object class="AdwNavigationView" id="navigation">

        <child>
          <object class="CcUserPage" id="current_user_page">
            <property name="title" translatable="yes">Users</property>
            <property name="tag">current-user</property>

            <child>
              <object class="AdwPreferencesGroup" id="other_users_group">
                <property name="visible">False</property>
                <property name="title" translatable="yes">Other Users</property>
                <child>
                  <object class="GtkListBox" id="user_list">
                    <property name="selection-mode">none</property>
                    <signal name="row-activated" handler="on_user_row_activated" swapped="yes" object="CcUsersPage"/>
                    <style>
                      <class name="boxed-list"/>
                    </style>
                  </object>
                </child>
              </object>
            </child>

            <child>
              <object class="GtkButton" id="add_user_button">
                <property name="sensitive">False</property>
                <property name="label" translatable="yes">_Add User…</property>
                <property name="use_underline">True</property>
                <property name="halign">center</property>
                <signal name="clicked" handler="add_user" object="CcUsersPage" swapped="yes"/>
                <style>
                  <class name="suggested-action"/>
                  <class name="pill"/>
                </style>
              </object>
            </child>

            <child>
              <object class="GtkButton" id="add_enterprise_user_button">
                <property name="label" translatable="yes">Add Enterprise User</property>
                <property name="halign">center</property>
                <signal name="clicked" handler="add_enterprise_user" object="CcUsersPage" swapped="yes"/>
                <style>
                  <class name="pill"/>
                </style>
              </object>
            </child>

          </object>
        </child>
      </object>
    </property>
  </template>

  <object class="GtkSizeGroup">
    <widgets>
      <widget name="add_user_button"/>
      <widget name="add_enterprise_user_button"/>
    </widgets>
  </object>
</interface>