4. Plan seating arrangements with fun in mind. If you are hosting a sit-down dinner with eight or more guests, it's usually a good idea to assign places. Seating couples separately usually inspires more conversation (they do talk to each other all the time, right?), and seating your most charming guest next to a wallflower can help the shy one open up. And if you want to create a livelier atmosphere at your next shindig, reach beyond the usual suspects — invite a new neighbor or recent acquaintance, or ask a friend to bring a guest.