[daeron80]

Yes, it's possible but it's a little more convoluted. I think what you described is about right. In detail:

1. Get your faders right for section 1.
2. Select the All group.
3. Switch a track to the Volume track view (which will switch them all).
4. Click on one of the lines at a point prior to the start of section 1 to create automation points on all tracks.
5. Switch automation to Off.
6. Deselect the All group.
7. Get your faders right for section 2.
8. Set playback to the beginning of section 2.
9. Select the All group.
10. Switch automation to Write and play back a little.
11. Select an area around the point where the automation jumps back to section 1 levels and hit delete.
12. Switch automation to Off.
13. Deselect the All group.
14. Get your faders right for section 3.
15. Repeat from step 9 as needed.