DOCK SPAWN TS / INTERACTIVE DEMO
A little room to rearrange.
Move one panel. Keep the rest of your workspace in place.
Try the outer edge
Drag Pivot to the indicator at the bottom edge of the entire workspace, or select Dock at bottom. All three panes receive equal height.
Or split one panel
Reset, then use Detail's own bottom indicator or Split Detail. Detail shares its space with Pivot while List keeps its height.
Compare the strategies
Choose a sizing strategy, reset, and repeat the same move. Equal distribution affects direct siblings at the outer edge; nested groups stay together.