Press F in the AI chip, it will give you red color by default, press f again if u want to change it(i think two humans from the same team cant attack) put the AI chip into someone and then set the rebirth machine(AI chip and a generator connected), press F in the rebirth machine until the color is red(or the color of the chip that is inserted in the human you want to rebirth), if you did it correctly, the human will become a light and start flying trought all the map, then he will go to the machine and revive, remember that the human need to be alive before you try to rebirth it, sorry for my bad inglish, correct me in the comment section