Fill in the addresses you want to spend and the satoshi amount/address of receivers and the address of your left change, then this composer will return the transactions and signing argument for relevant chains; take them to your private device and sign with the private keys then broadcast the TXs. The id for bitcoin core chain / BCHN chain / bitcoin SV chain / BCHA chain are respectively 1 / 2 / 4 / 8, therefore, say, the address for the currency ₿ , aka BTC, is represented by "15" and the address for the currency BCH is represented by "14" and the address for currency BAB is represented by "10".