Customising Default Kinetic Search Forms


I’m looking to customise the default Search forms that show in Kinetic when searching in fields.

E.g. below is the slide-over window that appears when clicking the ‘Part’ field search button on the Part Entry form. I want to add additional fields - e.g. ‘Product Group’; ‘Part Class’ and other custom attributes. Where would I access this form in Application Studio? Thanks for the help!