How to add a new tab into the File New dialog and have templates in that new tab use a custom seed part

How to add a new tab into the File New dialog, and then have templates listed in that new tab use a custom seed part.

1. Use the NX log file to confirm the current model pax file (ugs_model_templates.pax) location.
This pax file could be either in the OOTB NX install location (UGII_BASE_DIR\UGII\templates\), or in a location defined by this environment variable UGII_TEMPLATE_DIR.

2. Make a copy of ugs_model_templates.pax in the same folder location. Rename the copied pax file to a different name which relates to name of the new tab; example here uses this name: ugs_fixture_templates.pax

3. Edit ugs_fixture_templates.pax in Notepad++.

4. Make following changes:
(a) Line 5: FileNewTab="Fixture". This will result in a new tab named Fixture that shows up in File New dialog.

(b) Locate the "PaletteEntry id" grouping associated to the template, within this grouping, change "Presentation name" and "<Filename>":
   Presentation Name = display name of the template within that new tab.
   <Filename> = prt file name of the custom seed part. (Make sure this prt file is in the same directory as the pax file).

This is the result of NX File New dialog: