Four men and a young boy are at a table set up for wood crafts.
Five total people are near a table with objects on it.
Four men plus a boy equals five people and they are at the table with the craft objects on it.
Four men and a young boy is five total people, and to be at a table requires being near a table.
Four men and a boy equal five total people and at a table is the same as being near a table in meaning and wood crafts are objects so table with objects is similar in meaning as table set up for wood crafts, just less specific.