Group discount not for specials

[TheDNA]

Is it possible to disable the group discount for the monthly specials?

So when a customer has a group discount of 10% and orders:
product A: $100,-
product B: $200,-

Product C: Sales $200 for $100,-

Is it possible to enable the discount only for product A and B?

[swguy]

Nothing is built in; you have to write code.