Self balancing robot help adding potentiometers for pid

Have built the robot using nano and it balances fairly well setting pid in the code.
Want to add pots for pid, but do not no how to wire them or program them.
Any help appreciated
I am not a programmer.

https://www.arduino.cc/en/tutorial/potentiometer

Thanks. I understand pots to control simple output.
Need to know for pid manual adjust where to insert the pot in the wiring and code.

Please read and follow the directions in the "How to use this forum" post.

I am signed in and have read how to use this forum.
Please advise where I have erred in my questions.

Need to know for pid manual adjust where to insert the pot in the wiring and code.

Post the code and wiring diagrams properly, as described in the instructions.

Have you got the AnalogInput example working in 03.Analog section of the examples? A place to start.

Need to know for pid manual adjust

Manual adjust of what?

Wiring in a potentiometer is a no-brainer.
Reading a potentiometer is a no-brainer.

Using the data from the potentiometer is NOT a no-brainer