Can we make an appointment to get help with the SSI application?
You can schedule an appointment with a local Social Security office to file an application.  Call 1-800-772-1213 from 7 a.m. to 7 p.m.  Monday through Friday.
can we just do it online if we can't go in?
Is the person that wants to file for SSI between the ages of 18 and 65?