There is one man sitting at a table with a laptop , while looking at another man who is standing in front of a projection screen .
The people are in front of screens .
There is one man sitting at a table with a laptop, while looking at another man who is standing in front of a projection screen.
The people are in front of screens.
There is one man sitting at a table  with a laptop and another man front of a projection screen shows that the people  are in front of screens
There is one man sitting at a table with a laptop and another man front of a projection screen shows that the people are in front of screens