Where is the iWork shape library stored? I created a Custom Shape Library via iWork and would like to share it within my company. Where is this library located so I can copy/paste it to all other users?

I already found where custom templates for Pages and the color palettes are stored. Yet I struggle to find the library.
The shapes are stored in the property list at

~/Library/Group Containers/74J34U3R6X.com.apple.iWork/Library/Preferences/74J34U3R6X.com.apple.iWork.plist


in the array TSDUserDefinedShapeLibraryPathSourcesKey.