Why is there a 6th team member in 5v5 tournaments sitting on the side?
I was looking at the ELeague photos, and often in them you can see a 6th player in uniform on the side.
http://www.e-league.com/lcq-gallery/rjusz8h8jniodazpeldexffvukfyol
Who is this and what can he do? Its not a 6th player (games are played 5v5), but it seems that he can communicate with the team (you can see he has a mic). It's not a referee too, because he's in the team uniform.
So who is this guy, and what does he do?
Edit: Also, what does that team member have access to?
Pictures about "Why is there a 6th team member in 5v5 tournaments sitting on the side?"
Neymar Jr's Five 2018 Men's Final Match | Five-A-Side Football Tournament
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