>well, when I split grids both panels show same columns.
As I see, this (do not know why) is problem to you...
What is the reason this does not do the job for you?

WITH ThisForm.GridObj
	.Partition = .Width / 2 && or other value
	.PanelLink = .F.        && separate panel settings
	.Refresh
	.Panel = 1              && Active panel is the right one
	.DoScroll(5)            && Scroll it in right direction
EndWith