To distribute form fields
Click the Select tool at the top of the Panel bar and press Shift to select at least three form fields that you want to distribute.
Right-click and choose a command from the Distribute menu. Vertically arranges the intermediate form fields evenly between the topmost and bottommost form fields in the selection. Horizontally distributes them evenly between the leftmost and rightmost selected form fields.
Notes
To align only controls of the same type, you can also choose the tool you used to place those controls.
Do not edit form controls or run Form Typer on a form with active XFA controls.