I am not well-versed or knowledgeable in music composition or theory, however I am wanting to learn how to make functional game music for a side project I'm doing to learn how to code and I have played guitar for a while and I was not able to find anything in videos or the manual able being able to go from one note to either a higher or lower note without just adding the other note at the spot I want. In guitar the effect I am referencing is known as a bend, where a player hits the note(s) then physically bends the string(s) to get a higher note, or in reverse takes a pre-bent string for the higher note then after hitting it allows the string to revert down to the original note. 

Would there be a way to add this into the system? (if this is ALREADY a feature and I just couldn't figure it out, apologies and can you let me know what that procedure is?)