Choice if the promocode is valid on Additional Options

By default at the moment, if you create a promo code, by default, it's valid on additional options, too.

Could you please create the possibility to select if the promo code is valid for the additional options, too?

For example, if I create the code "PROMO50" with a discount of 50%, it's discounting the Additional Options, too. That doesn't work for, in my case, parking tickets.

Thanks,
Geo