Tour Variations & mulit booking

i have a problem.
when i create a “Tour Variations” doesn’t work well with “Group Discount”.or even with mulit booking.
if the booking for 3 personal and chose any item of “Tour Variations” it only count just for 1 !!!

take a look on this link to know what i mean

Authentic Breakfast with locals and tour to Giza pyramids and Camel Ride