Product variant and Quantity per order

Hi everybody.
I have a problem of "minimum quantity per order" and "Product variant" used together

For example a necklace with 4 different colors (blue, red, white and black) and a minimum Q/p/Order of 4

I'd like that my customer could choose the color they want and the only limitation would the total quantity per order : for example 2 red, one blue and one black. It makes 4 necklace : Ok order is valid.

The problem is that Hikashop doesn't let the customer make that kind of selection. The customer have to choose the color and it automatically set de quantity to 4. So he can only takes 4 red, 4 blue and 4 black.

Could you please Help me to set Hikashop working like that ?

PS : Sorry for bad english writing.

Hi,

thanks for your answer.

In the checkout process when I tried to change the quantity of a variant Hikashop send and alert.

The problem whit the restriction in the shipping method is that the limitation of 4 pieces is set on the whole catalog.
I have different products and each has different rules.

For example :
- Necklace are sold by 4, no limit on color choices, For example : It can be 1 red, 1 blue, 1pink and 1 white or 4 blue.
- T-shirt are sort by 2, no limit on the color choice, 2 red or 1 blue and 1 red,
- etc.

I can't figure out how to set that.
I'm a developer so I can create un plugin but I need some help to know how to start.

Thanks