Visio has manual guides and automatic tools to help ensure the shapes in your diagram are aligned and spaced well. That helps make your drawing as clear as possible and give it a professional look.
If Auto Align & Space doesn’t arrange the shapes the way you want them, move the shapes manually or try some of the other options. Undo Auto Align & Space by pressing Ctrl+Z.
The commands under the Align button align shapes without changing their spacing. You can hold the pointer over a command to see a preview of the effect it will have before you commit to the change.
The specific Align commands align the selected shapes with the primary shape. However, the Auto Align command does not align to a primary shape.
When you drag a shape, green positioning guides help you place it exactly where you want it. In the illustration below, the distribution arrows appear when the shape is dragged to match the distribution of other nearby shapes. Dashed lines appear to help you align horizontally or vertically with other shapes.
The spacing commands from earlier versions of Visio are still available, which present different spacing options.
Re-Layout Page is located on the Design tab, in the Layout group. If you have a simple diagram and you’re not sure about the best way to arrange it, select the shapes you want to rearrange or click a blank area of the page to remove any selection and affect all shapes. Then try holding the mouse pointer over the various designs in the gallery to see what effect they have. You can see a preview without committing to a layout until you click it.