Split container

hy all, i'm facing an issue with splitting my container.

I need to split my container in 2 columns. the right column should have only one row, but the second column must have 2 rows.

i started with a docking container dock at top, but when i split the left container in 2 rows, the second rows goes under the left coloumn. How to avoid that?

Is it the right choice to use the docking container?

Thanx in advance.