How to nest 2 dockers at once

In my last version of corel draw I was able to have 2 dockers nested one over the other at the same time.

I used this to have the object manager always open on the bottom third of the docker window, and then would use the top two thirds for whatever other docker I needed at the time, 

such as; contour, object properties, allign and distribute, etc. 

I cannot seem to find a way to accomplish this in corel 17.

Any ideas??

-Jason