“New Row” Button Customisation | WordPress.org

Hi

I have few questions related to the “New Row” button that appears on the list view as well as child form, basically

1. How do I change the label of this button (from “New Row” to “Add new Book” or something
2. Is there a way to disable/enable this button in the Parent-Child form based on a condition, so if a field (e.g. Status) = “OK”, display Add-record button for child form, otherwise hide/disable the button