Am editing a short film I shot, and have been frustrated with a bunch of sound issues, but just figured out that all the sound issues are only on one of the audio tracks. Now how would I lower volume levels on only a1 or a2 for example, without lowering the volume in the other. Most of the issues are simple clicks and pops, so I just need to lower split second bits of audio.

Thanks, I'm a newb to this so please be detailed!