Yes. There's an option to add "related contact". I'm not sure what triggers the full flow, but normally it shows three options, and eventually you can get a l

Yes. There's an option to add "related contact". I'm not sure what triggers the full flow, but normally it shows three options, and eventually you can get a larger list of 15 or so expected options (mother, father, brother, spouse, etc). And an option for "all labels" that leads to the mess hinted at by this constant. I'm not sure what the point is, since you also have an option for a custom label, which even if I wanted to add a link for the "younger cousin (mother's sibling's daughter or father's sister's daughter)", I'd probably type in whatever I call that relationship informally as a custom label before selecting that mess.