reginaldStjohn
the take lanes actually do allow overlap, that is what the cross over is for. You can make that cross over quite big if you are trying to merge two clips. As for timing instead of moving the clip you can move the data in the clip by holding "cntr-shift" (I believe) with your mouse over the desired clip. Your cursor should change to a two sided arrow thing like "<<->>". You can then adjust the timing of the data within the clip window. I do this all the time to adjust timing on clips.
 
However, as noted by others, I personally think it is cleaner to do my comping, bounce down to one clip and then split and move the parts around for timing after.

reginaldStjohn
the take lanes actually do allow overlap, that is what the cross over is for. You can make that cross over quite big if you are trying to merge two clips. As for timing instead of moving the clip you can move the data in the clip by holding "cntr-shift" (I believe) with your mouse over the desired clip. Your cursor should change to a two sided arrow thing like "<<->>". You can then adjust the timing of the data within the clip window. I do this all the time to adjust timing on clips.