Of course, such an event can be done, but almost certainly an invasion of all sorts of smart people and scammers will immediately begin, who will want to troll or even hope to somehow make money on it.
If the group setting is public, then potentially scammers can join at any time and post anything to trap other gamblers or even scam to make money. I think admin should limit new members joining and being active 24/7 to monitoring and verifying news from every poster.
Well this is certainly a challenge, for a group or super group of telegram you need to have a lot To people, I think that for which they have a total control of this it is necessary that they can have several moderators and that they are 24h, perhaps the users are protected and the true meaning of the group is not deviated, it is very easy for the scammers Enter speaking for private messages, the best thing before this is to report them so that they do not continue in it. And as it is a group for trading where the ideas of each user are shared, it is necessary to have very good control to what things they publish, the rules of the group must be very strict.