When you come across a chip-specific merchant terminal, simply insert your EMV card into the slot in the terminal and follow the prompts on the screen. You may still need to sign to authorize the transaction, and as usual you will receive a confirmation receipt.
If the Merchant terminal does not accept chip cards, you or the merchant can still swipe the EMV card in exactly the same way as you do today. You can always follow the prompts on the merchant terminal if you aren’t sure whether you should swipe or insert your Card.