Tambah Users Tetapi Hak Akses Tidak Bisa Terinput

Assalamualaikum Warahmatullahi Wabarakatuh...
mau tanya saya mau menambahkan sebuah manajemen users untuk mengelola halaman administration tetapi hak aksesnya tidak bisa, mohon solusinya ya mas?
 
//Controller
 
public function tambah_manajemenuser(){
		if (isset($_POST['submit'])){
			$config['upload_path'] = 'asset/foto_user/';
            $config['allowed_types'] = 'gif|jpg|png|JPG|JPEG';
            $config['max_size'] = '1000'; // kb
            $this->load->library('upload', $config);
            $this->upload->do_upload('e');
            $hasil=$this->upload->data();
            if ($hasil['file_name']==''){
                    $data = array('username'=>$this->db->escape_str($this->input->post('a')),
                                    'password'=>sha1($this->input->post('b')),
                                    'nama_lengkap'=>$this->db->escape_str($this->input->post('c')),
                                    'email'=>$this->db->escape_str($this->input->post('d')),
                                    'level'=>$this->db->escape_str($this->input->post('f')),
                                    'id_session'=>sha1($this->input->post('a')).'-'.date('YmdHis'));
            }else{
                    $data = array('username'=>$this->db->escape_str($this->input->post('a')),
                                    'password'=>sha1($this->input->post('b')),
                                    'nama_lengkap'=>$this->db->escape_str($this->input->post('c')),
                                    'email'=>$this->db->escape_str($this->input->post('d')),
                                    'foto'=>$hasil['file_name'],
                                    'level'=>$this->db->escape_str($this->input->post('f')),
                                    'id_session'=>sha1($this->input->post('a')).'-'.date('YmdHis'));
            }
            $this->Model_app->insert('users',$data);
 
              $mod=count($this->input->post('modul'));
              $modul=$this->input->post('modul');
              $sess = sha1($this->input->post('a')).'-'.date('YmdHis');
              for($i=0;$i<$mod;$i++){
                $datam = array('id_session'=>$sess,
                              'id_modul'=>$modul[$i]);
                $this->Model_app->insert('users_modul',$datam);
              }
 
			redirect('administrator/manajemenuser/');
		}else{
			$title ='Tambah Manahemen Users';
            $proses = $this->Model_app->view_where_ordering('modul', array('publish' => 'Y','status' => 'user'), 'id_modul','DESC');
            $data = array('record' => $proses, 'title' => $title);
			$this->template->load('administrator/template','administrator/mod_users/view_users_tambah',$data);
		}
	}
 
dan saya juga menambahkan screenshotnya di bawah ini