Simplify the following text for a Grade 7 native English-speaking person.
Original: Each participant places one arm , both put either the right or left , on a surface , with their elbows bent and touching the surface , and they grip each other 's hand .
Simplified: Each player places one arm , either the right or left , on a surface , with their elbows bent and touching the surface , and they grip each other 's hand .