Just need a quick nudge in the right direction...

I am busy with an upgrade to Zencart v157 and decided to install ZCA Bootstrap 4 v330 (Upgraded version of my previous template not available).

Then I saw a few days ago that v340 was released and now includes the following change:
CHANGE: Include Bootstrap-formatted templates for "One-Page Checkout". (OPC is a function that I really wanted to try out).

So I followed the upgrade instructions (from v330 to v340) shown in the readme file.

Question: Do I also need to install the full One Page Checkout plugin to get the functionality?
(I could not find any admin setting to activate OPC after only upgrading to v340).

Question