UltraRacer playstation 2 controller programming

Here's the instructions on how to relocate buttons:

1. To assign one button (i.e. "R") to perform another buttom function (i.e.
"Z"): Press and hold the SET button for about 1 second to enter the
"FUNCTION SETUP MODE", the FUNCTION SETUP LED will illuminate and two beeps
will be heard.

2. Press the button (i.e. "R") you would like to reassign one time, the
FUNCTION SETUP LED will blink once and a single beep will be heard.

3. Press the new, desired function (i.e. "Z") one tim, the NORMAL LED
indicator will illuminate instead of the FUNCTION SETUP LED. Two beeps will
be heard. The setting process is now complete.

The UltraRacer will only return to its default setting when the buttons "A",
"L", and "R" are pressed at the same time BEFORE you turn on the console's
power. After about two seconds, the UltraRacer will generate three beeps to
acknowledge reset button configuration is set. To reset a particular button,
first press the SET button, then press the relocated button twice and then
press the SET button once more until the LED light goes off. THe button's
original function is used as a default button for further relocation.

These instructions were told to me bay a company selling these controls on AMAZON. I have been trying to reprogram mine and cant figure out where the "R" button is.