The process of sending money from a Taproot wallet in Bitcoin Core to another taproot address is exactly the same as sending from any other kind of wallet.

This guy has already created step by step instructions of commands that you need to run to make it work: https://stackoverflow.com/questions/38493893/heres-how-to-send-raw-transaction-btc-using-bitcoin-cli-command

Transactions inputs are specified with UTXOs, so there's no need to specify the addresses themselves directly in the inputs.