I need that after sending a remote control command, for example to buy a coin, several strategies should buy that coin at once, not just one. Is this possible?

: Strategy settings

In the MoonBot terminal, strategies with the same ChannelKey settings, which listen to the same managing Telegram channel, will be simultaneously triggered, and in your case buy a coin, only if each of them will be ticked on the Main tab in the IndependentSignals=YES parameter.