4. Notice that the 4th one is "4/B", B for battery. Use a Y harness to connect both the battery and a servo. Actually, it doesn't have to be that channel; the power connections are all connected together.
What plane are you thinking of putting this in?

BTW it helps if the subject of a message actually tells you what the question is about. "help!!!!" could mean a lot of different things, and some people may just skip over it and not bother to read the message.