Is there a way to attach a Census Source to an indirect family member (ie Grandchild, Niece/Nephew, Sibling of head or spouse)?
You click on the "Head & shoulders" icon and select the individual from the drop-down list. As you have seen, the primary person and immediate family members (spouse & children) usually line-up and can be attached one by one, but the distant relatives and those unrelated need to be added separately. After making them the main person, click on "Not your family? Find your family." and either choose the relevant person from the list or, if not in the list, enter their ID reference manually and click on "Select" so the process can be completed.
As I write, the image to help illustrate the process has not yet appeared - I will recheck later and add again, if necessary.
Update - now added to my original response: hope it sticks!
Further update - no it didn't!
Any idea why images can't be posted at the moment, anyone?