Son_of_Sin

I'm working on a medley right now, and that means there are going to be tempo changes throughout the piece. I was wondering how to change the tempo within a song, for example let's say I want an 8 bar intro at 88 bpm, but then I want bars 9-16 at 103 bpm - how do I do that/can I do that? Thanks.

simple question: how do I get an effect to apply to only one channel and not all of them? An easily recognizable example would be if I wanted the line of eighth notes in Chrono Trigger's Zeal theme to have that hall/echo sound, but didn't want the other tracks (with the melody, etc.) to have that effect applied to them, how would I go about making that work? Thanks.