The settings under this tab allow adjusting the output of imposed layouts to peculiarities of the destination printer by compensating for any horizontal or vertical misalignment it may exhibit.
You can adjust the corrections for front and back side of sheets individually. Positive values will move the pages on the sheet to the right or down, negative values will move the pages to the left or up.
To help find the best values for the calibration settings you can print a calibration page. This will print a page according to the current calibration settings. Fold the page through the middle horizontally and then vertically (make sure you fold precisely through the middle), then check whether the folds align with the centre of the calibration axes. If the folds are off, count the number of ticks along the relevant axis and enter that value in the corresponding controls. Enter negative values if the fold is toward the sides marked -Vertical or -Horizontal and positive values if the fold is toward the + side. (You can enter fractional values, like 2.5 or 1.25.) Then reprint the calibration page to check the new settings. If necessary, repeat this procedure until satisfied.
When you change values and move to the next field you can see the layout change instantly in any document’s main content view.