Hi,

Is there a way to change height of only one lane at a time?

Right now i'ts all or nothing. You change one and all the other ones follow the lead.

In my case in the track I only expand the ones I really need to expanded. For me, and it is really a personnal taste, it's efficient this and this is why I hope I can do the same with tha lanes.

mario

I would say you have Auto Track Zoom enabled. If you disable it, you can change the height of individual tracks. You'll find it in the Tracks - View - Auto Track Zoom.
 
Dave

If you grab the very bottom edge of the track (TV where the control/widgets are) and drag...

When Lanes are displayed, you can do the same to a lane, but all lanes on that track will adjust.

 
1. Select some track's No. (Ctrl-Click or Drag)
2. Click a trak's boderline and Shift-Drag.
 
 
 

Shift Z will toggle auto zoom on and off, when off you'll see the little track expand up arrows, then you can adjust individual track heights.