Hi Mani - I'm glad you liked the video and found it helpful! Yes - you can add a delay to just one sample (of a pair) but it's a little cumbersome. Inside your drum rack, create an instrument rack (cmd-G) that holds the sample you wanted delayed plus the delay effect. In the same Instrument rack (NOT the same sampler) place the other sample. When you hit the drum pad, it should play both samples at the same time, but the delay will only effect the first sample.