Here are a few examples of photography poses for 4 people. As with all poses of 3 or more people, it usually makes a more pleasing portrait to have the heights of your subject's heads at different levels.
This photo above was from a photography job I did in a church basement.
There was not enough time for formal posing with posing stools and a background, so I only had folding chairs and a few small foot stools that I brought along to use to help pose my small family groups.
The pose above was of 4 adult siblings. I sat the sister between 2 of her brothers on folding chairs. I had the third brother kneel on one of the foot stools behind the other three.
This way the female was surrounded by her brothers. If you connect the heads in this order: 1-2-4-3 and back to 1, you see we have a flattened diamond shape which I often use with photography poses for 4 people.
The family was quite pleased with the arrangement, but what could I have improved on? I could have had male #1 sit on a book on the chair to raise his head perhaps 2 or 3 inches.
The pose below was a completely different situation. It was an office party at a restaurant. I had just enough room to set up a medium-sized background and two umbrella lights.
This pose was of four co-workers, so I did a pose that was a little more formal and professional than I would with a family portrait. No intimacy or touching allowed! ;-)
I had the two shorter ladies stand behind and between the two taller ladies who sat on posing stools. This created that pyramid shape that is a composition technique widely used in group portraits.
Usually adult women prefer that their bottoms do not show in portraits and this is a pose that accomplishes that.
The 4 children sat in a straight line along rocks near the ocean.
Photography poses for 4 people are usually not done by having all the subjects sitting in a row next to each other. I wanted the pose to be a little more natural and less structured for these 4 cousins enjoying the beach.
I purposefully did place the taller two children in the middle of the composition to create that pyramid shape that has been discussed in many of the photography articles on family and group posing tips on this site.
Another posing tip is to make sure everyone's hands are not in the same position. Notice that each child has there hands placed in a different way.
Photography Poses for 5 People. How to do photography poses for 5 people.
Photography Poses for 6 People. A little more complicated than posing groups of 4 people is doing groups of 6 people.