We have plus sized friends and family that eats with us sometimes. If just one person, we also have them eat on the end or will put them on one side, Hubby on the end and me on the other side. If four or five of us is eating we'll put the largest on the end and two on each side. We've served as many as 10 inside on a really cold holiday. We put who we can at the table and the others eat off tv tables on the couch and recliners. I usually put the larger people there as they are more comfortable and it's about having a good time anyway.
My hubby also moved our table towards the couch about 3 or 4 inches. Believe me, it did make a difference in getting in and out and comfort. Good luck