add check list

in stock.py I want add check list to multiple select data in a table.

that table is

columns = {
        'name': fields.char('Serial Number', size=64, required=True, help="Unique Serial Number, will be displayed as: PREFIX/SERIAL [INT_REF]"),
        'ref': fields.char('Internal Reference', size=256, help="Internal reference number in case it differs from the manufacturer's serial number"),
        'prefix': fields.boolean('Prefixxx', size=64, help="Optional prefix to prepend when displaying this serial number: PREFIX/SERIAL [INT_REF]"),

        'product_id': fields.many2one('product.product', 'Product', required=True, domain=[('type', '<>', 'service')]),
        'date': fields.datetime('Creation Date', required=True),
        'stock_available': fields.function(_get_stock, fnct_search=_stock_search, type="float", string="Available", select=True,
            help="Current quantity of products with this Serial Number available in company warehouses",
            digits_compute=dp.get_precision('Product Unit of Measure')),
        'revisions': fields.one2many('stock.production.lot.revision', 'lot_id', 'Revisions'),
        'company_id': fields.many2one('res.company', 'Company', select=True),
        'move_ids': fields.one2many('stock.move', 'prodlot_id', 'Moves for this serial number', readonly=True),