I've been trying to do this, but it seems impossible, it may seem stupid. I have a family with a mom, dad and three kids, and I made a restaurant with tables that seat five and six. Couples and single sims can have dinner together, or a group of sims on an outing, but I can't get the family in one table. I tried making them a group, but you can't have more then four sims in a group. Can someone help me? Thank you.

Maybe it is your graphics card and processor, normally I could hold about 8 sims in a group. If you want to try a family dinner, try going to Londoste lot, they got a 2x2 table in the middle built for feeding a family full of sims.

If your group is limited to 4 sims, try entering the cheat: intprop maxnumofvisitingsims ## Where ## is a number of your choosing. You might need to enter it from the neighborhood, but it should let you extent the group to it's normal level of 8.