EXS 24 Logic Sampler Users Group

We just got a Mac and upgraded to LAPM 5.0, and I noticed that the 
listing of EXS Instruments is like it was in our PC version when the 
EXS first came out - one long list of EXS instruments, no sub-folder 
setup seems to be available.  Where or how do I get the 
Windows "Explorer" type folder setup that was incoporated into the PC 
version at about v.4.6?

It's very tedious to have to scroll down a long list of EXS 
instruemtns instead of being able to organize them (as I did in the 
PC version) into sub folders, etc.

Help.

Thanks,
David Benus