Question 1:
A very good attribute GR&R can be found at Don Winton's website. Perhaps you may find it also in the PDF zone here at the forum. Look for an Excel spreadsheet, it contains most of the directions.
Question 2:
Typically an attribute R&R is simply a pass / fail. If I understand the question, you are creating variables data (albeit not very discriminating) when you classify parts in more than a pass / fail test, therefore a variable R&R should be performed.