How to get Lockers to work on acf post types?

Hi
I want to use Lockers within custom post types.
custom post types generated with the ACF Plugin.

I installed tagdiv demo app listings with its demo content.
Next I went in Admin section to APP Listing –> All APP Listing –> selected the demo content in Edit-Mode.
I selected the Gutenberg block tagdiv Partial Locker (later tagdiv Section Locker) and saved via update.
In preview the demo content was not locked. It was not working.

My question:
How can I get locker to work?
What needs to be done, which steps need to be performed… ?

Is there a working way to do this with acf post types, Field groups ?

I found the answer to my question above.
You can activate Locker for custom post types in the Theme Setting under Admin.

Admin –> Newspaper –> Theme panel –> CPT & TAXONOMY