The ShipRush system tray menu can be customized to have only the options you need. You can remove stock options, and create your own custom shipping templates and add them to the menu.
Here is the standard menu:
The area that can be customized is the top block:
This area of the menu is controlled by the contents of this directory:
"C:\Program Files\Z-Firm LLC\ShipRush v5\MENU\MENU_FEDEX\"
Note that ShipRush needs to be restarted to see the changes
you make to this directory.
By modifying the contents of this directory, you can create your own ShipRush system, with just the options you need. You can even create subdirectories under this directory to make a cascading menu that works just the way you want it to. For example:

This is done by creating subdirectories under
"C:\Program Files\Z-Firm LLC\ShipRush v5\MENU\MENU_FEDEX\"
like this:
\Sending Samples\ (Gidget Sample, etc. templates are saved here)
\Standard Items\ (The stock ShipRush templates are moved here)
\Top Five Products\ (Other templates are saved here)
The same can be done for AutoShip templates by creating the appropriate structure under the \MENU\AutoShip\ directory:
"C:\Program Files\Z-Firm LLC\ShipRush v5\MENU\AutoShip\MENU_FEDEX\"

Next, learn how to Customize the Windows Start Menu