I looked it up and apparently all you need is for them to reply, not be related to you, and to check the box that you think the person is technically qualified.
I seriously cannot believe that my supervisor (and now I learned my associate at my old firm) would not check all the boxes. People...
I have a somewhat poor relationship with my former supervisor and he indicated that he would not check the box on the CA engagement record that indicates that I have responsible charge capability. My other three references (one from my old firm and two from my new firm) should be able to check...