Of course you can. The NSW SES has a variety of ways you can volunteer, designed to provide every community member opportunities to engage in meaningful volunteering, no matter what their personal circumstance may be.
For Unit Volunteering, the application form provides a section for you to disclose any disabilities and your required adjustments to facilitate your request.
Check out the other volunteer categories here, and submit an expression of interest for the type of volunteering that best suits you.
To get in touch with your local Unit, call the Volunteer Information line on 1800 201 00 or contact the Volunteer Experience team at experience@ses.nsw.gov.au