V1.7 2 stores to one webshop stock selection

[Brainyke]

Hi all,

Can anyone point me in the right direction how i can have both stock of my stores into one webshop?
I had it so far when i have like 30 items of the same product in my store, there is only shown 30 in case of 60 ( or where customers can select the shop of choice )

Thanks in advance