FL Studio 7 Help Please

termin8or123

Ok well I'm new to these forums, and I saw these forums and it looks like this is a friendly community of people. Anyways I will try to be as specific as I can, but I need help with one little problem. When you are making a beat in Piano Roll, let's say you have one key going over the line. (The line is marked with numbers: which are the seconds) But anyways it will play the that is a little over the line and it will keep playing until that second is done and replay from the beginning. Is there a way to make it stop right after that key without having to play the rest of the second. I have a pic below showing an example of the problem.

!!!!PICTURE!!!!
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P.S: Sorry it is Very Large