How to change a graphic's scale
After adding a graphic to a report layout, you can rescale it. Enter layout editing mode and choose Report>Set Header Art Scale... or Invoice>Set Header Art Scale..., depending on whether you're working with a report or invoice. A dialog appears prompting you for a percentage to scale the graphic.

If you want to increase or decrease the graphic's size, enter the appropriate percentage to scale it in this dialog and then click OK to record your changes.