About duplicate names...On this schedule appear "John Clark" and "John Clark Sr". Since we are not to index name suffixes (e.g., Sr) am I correct in assuming that these would be duplicate names and only the first instance would be indexed?
Yes, you are correct since all the required fields are the same and the names are exact duplicates.
You are correct! Since there is no field for suffixes we do not index the Sr so they would appear in the index as the same name. The family researcher will see the Sr when they look at that page.