1. for you - used in this way when the possessor will have control of the relationship or is dominant, active or superior to what will be possessed.
Māu tēnei rorohiko. / This computer is for you.
(Te Kākano Textbook (Ed. 2): 54-56, 140-141;)
2. you (1) will.
Māu tō tātou waka e horoi. / You will wash our vehicle.
(Te Kākano Textbook (Ed. 2): 64-65;)