In our current setup of JSM, when in a transition screen, the 'reply to customer' field is located at the right.

However, I just created a sandbox and saw there that when I use the same transition, the 'reply-to-customer' field is on the left. The button is now also called 'Respond to office' instead of 'update'.

How can I get the 'respond to customer' on the left in the transition field? Or is this not possible?
Thanks!