Leave Ethel seated at the Dove Table until seating Chuck [Ethel] with Group 2.

Leave Chloe seated at the Bell Table until seating both Chuck [Chloe]s (#15 and #16 in the Guest List) with Group 2.

Leave Chloe seated at the Heart Table until seating both Chuck [Chloe]s (the last two guests).

Note: No matter what configuration I use, the game likes to give me a reseat request I can't fill sometime during this Group! If this happens to you, simply pick up the offending guest and drop him back in his seat. This will remove the reseat request (and leave your food chain bonus intact).