To install
1)The variable UGSV_LAYER_WIZARD needs to be set in environment befor UG is started.
This is set to the directory where this file is on your machine.
For example
set UGSV_LAYER_WIZARD=D:\user\vickers\ugsv_layer_wizard
in a .bat file that is used in calling UG
2) the custom_dirs.dat to contain the line
$UGSV_LAYER_WIZARD
The custom_dir.dat file lies in UGII\menus directory or can set your own using
set UGII_CUSTOM_DIRECTORY_FILE=%UGII_CUSTOM%\menus\custom_dirs.dat
For example how to customise UG, with layer wizard already built in see my customisation directory.