Module Dependency

[Neve]

Hi,
In the ADVANTAGE MATH PAC Manual, I read the following, which I do not understand.

“As mentioned, you should have the 41Z, the SandMath and the SandMatrix plugged in the calculator. They will use 6 pages of the I/O bus, to add to the single page required by this ROM. This means that only one page will remain available in the external ports of the calculator, so use it judiciously – I strongly suggest the OS/X Module to be plugged as well, and if possible (i.e. without a printer) in page #6. The WARP Module in page#7 (or the Power-CL for CL owners) will round up the perfect set.
It comes without saying that the Library#4 is needed as well, as a pre-requisite for all the modules mentioned before. And lest we forget, the HP-41 CX is required (the X-Functions won’t cut it, sorry).”

My knowledge is probably lacking many things when it comes to the 41CL, but I don’t understand how this is possible.
I have YFNX plugged into 1L, SM44 plug into 2, SMTI plugged into 3, and 411Z plugged into 4. Also Library 4 is plugged with ALPHA 804040-8120 ALPHA —> YPOKE.
I can plug ADVG into the last remaining half port “1U”, where and/or how am I supposed to plug WARP OS/X, and PWRX, as suggested?

Thanks