Hello NormanFernandez, Of course it is possible to insert an effect, (Reverb, Chorus, or DSP) in a specific measure, and in a specific channel of a song. just go to SongCreator and with the tabbed key go to tab 1-16, and select the channel to which the effect will be inserted. once the channel is selected, select the measure where the effect will be inserted, for example: measure 15. As there are already recorded notes, select INSERT. this will double the first bar of the measurement, then select NOTE, and with the dial turn until you find CTRL, a 0 will appear, forward of CTRL, then turn the dial until 94, which is the code number of the DSP . to change the intensity of the effect, move the dial again from 0 to 127, understanding that in 0, there is no effect and 127, maximum level of effect.
You can also apply this in a channel where there is an instrument change. using the Ctrl changes properly, you can insert voices, effects, modulation, vibrato and programs. I hope this helps. Greetings. Hans