Mother can directly
When newborns are able to suck a breast, they can be put to a breast together.
Mother needs a convenient chair with good armrests.
Three provisions are possible: If mother can sit, having leaned back on a chair back, or to recline in it, it can hold twins on each hand.
Mother can directly sit, having enclosed on both parties of a pillow on which put twins, on one from each party, feet towards mother's back, and the head mother hands presses to a breast.
It is also possible to put twins on mother's knees, one partially atop another, but the heads in different directions..