Rising Storm gift (DE)

I have bought a Gift (4 Pack) but i cannot make a giveaway because there is no dual Pack for "Red Orchestra 2: Heroes of Stalingrad with Rising Storm Game of the Year Edition" can i make a Request anywhere to finally make a giveaway?
Links:
RO2: https://store.steampowered.com/app/35450/Red_Orchestra_2_Heroes_of_Stalingrad_with_Rising_Storm/
RS; https://store.steampowered.com/app/234510/Rising_Storm_Game_of_the_Year_Edition/

any help will be good! thanks in advance!

Greetings from Germany NicolaiP