If you are black, once you make your first move, you can't abort. As white, you can abort before you make your move, and before your opponent (black) makes a move. However, if you abort too often, you will have the option suspended. If you don't make a move for 15 seconds on the first move as any colour, the server will abort the game.
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Tony, thank you for the information. Is this the same on chess.com and official uscf. Also, can the server get me a drink while they abort. 
. Sorry but i really dont know what a server is. Thanks again. WIll
Can someone please tell me how many moves I am allowed before its to late to abort. I have made one move in both games. My opponent has has made one move in one game and two in the other. Can I still abort one or both without affecting my rating or win/ loss. If I can abort will these be counted as a seaworthy... thank u for the help. Will