I have a layout with a map item and want to move the map itself (the extent, not the item) 5mm to the right. I am using a coverage layer with atlas. The atlas margin does not help since it's % and adds a margin to all 4 sides. The map has to match another map exactly when I export; moving the map item doesn't help.
I have played around with variables for the 4 extents but with no success. Can anyone help? Any formula that would move the extent by 5 mm along the x-axis in the layout?