By the deadline you need to have your arbitration cuts posted here and your final contract extensions offered. And a word of warning, do not wait until the last day or two before the deadline to do contract talks as eventually I will need to cut it off. The earlier you start, the safer you will be.
Format for arbitration cuts is as follow:
Team Name
Level Position Name
ie
Florida Marlins
MLB 3B Albert "Bad Joke" Sanchez