Providing a custom ImageLibrary

Hello,

I would like to provide a custom ImageLibrary to CATIA-MagicSoS end-users. 

I noticed that "common symbols" are available for any project using "Window > ImageLibrary" command, and that these symbols are organized in zip files stored in "/data/imagelibraries". For IT reasons I need to avoid writing in the "". 

Moreover I noticed that when creating an UAF Project it is possible to enable access to the MIL-STD-2525C military symbols, also stored in "/data/imagelibraries" but I could not find documentation on how to control access on this resource.

Is there any best-practice on these topics ?

Thanks in advance