CA withholding by my employer is not correct. I am on disability pay and my company in Atlanta is withhold taxes. CA does not tax disability income. How do I change this

You will have to discuss with your employer.

Note that California does tax disability benefits under certain circumstances.  See "Why are my Disability insurance benefits included as taxable compensation?" in this CA web reference:

https://edd.ca.gov/en/Disability/SDI_FAQ_for_1099G