Multi-sig(multiple signature) wallets of different networks can be activated in the group. Transactions initiated from multi-sig wallets need to be authorized by multiple private key holders (multi-sig members) before they can be executed. To use a multi-sig wallet, you need to set the multi-signature mode m/n, that is, at least m signatures from n members are required for the transaction to be valid. Multi-sig wallets can prevent single-point failures and are more decentralized and secure.