Is it possible for a custom transaction body field field of type list/record, custom record to remove the "+" button to prevent that a given user creates a instance from there instead of only from the custom record page itself? I remember the widget would change depending upon the number of entries you show. But when you get the dynamic version, I was wondering whether you can remove the + part. See screenshot:

Quick add option on the custom record type setup

I believe that is applicable to something else, to the portlets, like shown here. I tried and did not help in my case. NetSuite Tutorial Quick Add Portlet - YouTube