Setting up promotions, discount multiple purchases from same category

I am fairly new to CS Cart and having trouble setting up promotions I can do easily on my old cart software (Actinic/Sellerdeck)


[]Buy any two products from a specified category and get a 10% discount on the price of each

]Buy any three items from a category (or defined products list) and get the lowest price item half price


I have played with the various promnotion settings for ages and cannot get this to work. It seems you can specify products or category but the only condition for quantity is for total items in cart NOT just the total of qualifying items (i.e. in the specified category or product list)

I have also looked at the Buy Together function and that is interesting but displays very badly in the cart, not showing the additional items purchased, so not much use?

Any ideas much appreciated.