Yes, you can do this by grouping elements. 
For example, if you had 4 inputs (2 on top and 2 below), and wanted the tabbing to go from top to bottom first, instead of left to right - you would group the left side inputs, and then group the right side inputs. This would set the tabbing to go in this order: top-left, bottom-left, top-right, bottom-right.
*If it doesnât tab in the order you set up for some reason, try copying, deleting, and re-pasting the input (sometimes this happens to me)