How do you create the equivalent of a Libronix 3 Work Space in Logos 4?

Work spaces in Logos 4 are called Layouts. Rather than try to teach you how to do that here, there are some tutorials on the wiki that can help you.

http://wiki.logos.com/Table_of_Contents__ Lool at the section on Layouts.

http://wiki.logos.com/Logos_4_Video_Tutorials There are a number of helpful videos covering how to make up layouts and creating layouts for specific purposes.

It really isn't hard. You can get the idea of it through just one of the wiki entries.