But you have a completed commercial Arduino board to use in uploading sketches? Is this correct?

Just to be sure. You understand that an ATMega328 is NOT an Arduino and vice versa? I ask because it appears that you DON’T understand...

I do understand they are not the same. Arduino is a completed board. I have an Arduino uno board that utilizes the atmega328 chip. My understanding is I can use the Uno to program the 328. Am I not correct? please see this link
https://www.instructables.com/id/Burning-Sketch-To-Atmega328P-PU-On-A-Breadboard-Us/

 

I do understand they are not the same. Arduino is a completed board. I have an Arduino uno board that utilizes the atmega328 chip. My understanding is I can use the Uno to program the 328. Am I not correct? please see this link
https://www.instructables.com/id/Burning-Sketch-To-Atmega328P-PU-On-A-Breadboard-Us/

You can use the Arduino to program an AtMega328, IF THE ATMEGA328 CHIP HAS THE ARDUINO FIRMWARE FLASHED TO IT!!! The Arduino IDE has an option to flash the Arduino firmware to a “bare” chip.

However, I don’t know the prerequisites for flashing firmware to a chip as I’ve never done that.

Step 4 in the link you provided discussed this requirement.

 

You can use the Arduino to program an AtMega328, IF THE ATMEGA328 CHIP HAS THE ARDUINO FIRMWARE FLASHED TO IT!!! The Arduino IDE has an option to flash the Arduino firmware to a “bare” chip.

However, I don’t know the prerequisites for flashing firmware to a chip as I’ve never done that.

Correct. The chips I own have the boot loader on them. I was under the false perception the pin outs were the same. This was the root of my issue.