1. Go to C:\Program Files\Grid-Tools\FastDataMasker and launch BuildMap.xls. (This assumes that FDM was installed at the default location. The path may be different on your Application server)
2. Go to the Options tab and insert the supported functionality into the sheet along with a description.
3. Also add the details like Yes/No for the Char column, Yes or No for the Boolean column and default values if any.
4. Save the file and replace it back into the FDM installation folder.
5. Launch the FDM GUI. The option that you included in the sheet will now be visible.