Not clear if you are asking about schematic customization or a Windchill cache location.
All customizations to the user interface are saved in the <drive>:\Users\<username>\AppData\Roaming\PTC\Creo\Schematics directory.
To facilitate administration and sharing of user interface information, an administrator can configure the application to retrieve customization settings from a central location. You define a UI customization file location by setting the environment variable UI_CUST_ADMIN_DIR. The variable must be set to include the path to the location. The path can be defined using the \\<machine_name>\shared_folder notation. The name of the customization file should be creo_schematics_admin_customization.ui. When the customization file includes custom command, the creo_schematics_shortcuts.dat file must be placed in that location.
PTC Creo Schematics User Interface When PTC Creo Schematics starts, customization settings are automatically applied from <drive>:\Users\<username>\AppData\Roaming\PTC\Creo\Schematics or the working directory to various aspects of the user interface. The files in the working directory follow: • creo_schematics_user_customization.ui • creo_schematics_defaults.bin • creo_schematics_shortcuts.dat • creo_schematics_config.dat • creo_schematics_mapkey.dat
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