MPC500 how to quantize a beat in sequence mode

Hello Gentlemen

Can someone tell me how to Quantize a beat that I made in sequence mode, I am trying to use my MPC500 as a drum machine , so I loaded all my samples , but how do I Quantize my sequence ? I set my time signature to 3/4

TC = Timing Correct. Check that out.

It says TIMING CORRECT right on the **** machine! You looking at the 500 or your **** neck hurts?!