In step 6 of the checkout process, how can you change the "confirm button"?

My greetings to you, sir.
Hi, sir. My account has just been created, and I have questions about OpenCart. Please assist me with changing the "Confirm Button" at step 6 of the checkout process. On the right side is a button labeled "confirm the order." I want to alter this button, but I am unsure how. Please verify.
I appreciate your consideration of my request.