About alignment and distribution tools
You can use Px Editor tools to help you align and distribute objects in the Px Editor. The align actions are available from the Px Editor toolbar and both align and distributed features are available directly from the right-click popup menu.
Distribute
If you select three or more widgets in the Px Editor, you can use the Distribute feature to move the widgets so that the empty space between the objects is distributed evenly. You can choose to distribute the widgets either horizontally or vertically. To use this feature, select the desired widgets and right click on one of them. Select or to invoke the distribution action.Figure 1. Four labels left-aligned, vertically-distributed 
Align
If you select two or more widgets in the Px editor, you can use the Align feature to move the widgets so that the left edge, right edge, or center line of the objects align. To use this feature, select the desired objects and right-click over one of them. Select Align from the popup menu and choose the desired align option.