TheĀ generate_layout_element_display
allows us to bypass the Display Rules, so we can enable or disable an Element under our own conditions.
For example, if we want to assign a specific layout to Author Tom only:
add_filter( 'generate_layout_element_display', function( $display, $element_id ) { if ( 10 === $element_id && is_author( 'Tom' ) ) { $display = true; } return $display; }, 10, 2 );