Hi,
Okay so you're talking about characteristics and variants.
In HikaMarket (and now in HikaShop 2.5) ; the variants are not generated automatically.
It means that you have to go in the second tab, called "variants" when you edit your product, in order to manage the variants.
There, you can add new variants and select the values that you want to generate.
When you add a characteristic, you can select the default value for the characteristic, but it does not mean that it will create variants ; but if your product already have some variants, all will receive the new added characteristic with the default value you have selected.
The interface to manage the variants in HikaMarket has been build to optimize the generated variants because in HikaShop, with the automatic variant creation, if you add a characteristic which have hundred of values but you want only 3 of them ; you will have to delete a lot of products.
In HikaMarket you just have to select the combinations that you want to create and it will create them for you (and if a combination already exists, it won't duplicate it).
Regards,