Align and Distribute

Align and distribute

Select the controls, then use Edit → Arrange or right-click → Arrange.

Command	Does
Align left / right / top / bottom edges	Lines the selection up along one edge of the box around all selected controls.
Align horizontal / vertical centers	Lines up their centers.
Equal horizontal / vertical gaps	Spaces three or more controls evenly between the two outermost ones. The outer ones don't move; different sizes are accounted for. If there isn't room, spread the outer two further apart first.
Center selection horizontally / vertically on screen	Moves the whole selection to the screen's center line without changing its internal spacing. Works with one control too.

Each command is one Undo step. Nothing is resized or reordered, and exact positions ignore grid snapping.

Keep layer groups together

This option at the bottom of the Arrange menu is on by default. A fully selected group counts as one object and keeps its internal layout. Turn it off to align the group's members individually. You can also isolate the group and select its members.

A panel's children always move with it, whether or not they're selected.

Why is a command greyed out?

Hover over it: the tooltip explains. Usually there aren't enough independent objects. For example, one selected group (with Keep layer groups together on) is a single object, so there's nothing to align it with. Aligning needs two objects and equal gaps needs three.

Align vs anchors

Aligning moves controls once. Anchors decide how they move later, when a panel or the window changes size. Use Align to lay things out neatly, then anchors to keep them that way. See Anchors and responsive layouts.