A family member observing the gambler as though he's a coach can be detrimental to the supervisor if he's a non-gambler. It's more tempting for the non-gambling to try out the game. I think gamblers should be the observers of other players when they're gambling. Putting a non-gambler in this place will only get the person wondering if he should gamble. Especially when the person he's watching plays wins some money. I think that's enough to make him forget his task is monitoring the gambling in his home. Gamblers are meant to be flexible. They need to maintain a good relationship with other players, especially, those who have been experienced in the game. They are always willing to help gamblers with problems to relieve their stress and become better players.
However, it's hard to get them in all localities, but the task of that gambler will be better than a non-gambler. He's used to the game and can't get bothered over any outcome anymore. A family member's duty is more appreciated when he discusses and converses with the gambler to help him feel other aspects of life. I don't feel comfortable allowing a non-addict to see my screen while on a gambling site. I easily switch to another tab. Because he could visit the website, and wager with no prior experience, which may lead him to trouble.
A family member who observing and supervise a gambler must have a strong control over himself so he will not tempts with the gambling. His jobs is reminds a gambler so a gambler will not breaks his limits and can playing gambling without having a problem. It needs to have a strong bond between a family member and a gamblers so they can listen each other and will also help each other. They will not trying to stay at the casino for a long time because they already knows that will risks them to playing gambling. A family member can asks a gambler to do the other things and not just staying with him in the casino to distract his minds from thinks about gambling.
As long as they have a strong will to prevent the problems that can occurs from gambling, they will stay survive while playing gambling and will not have trouble or becomes addicted to gambling. They knows what they must do while they playing gambling and always responsible in gambling and knows when to stop gambling. But if you don't feel comfortable with the other people who watch your screen, you can do the other activity in regards to reduce your gambling activity.