beans-change-grid.php

https://community.getbeans.io/discussion/off-canvas-menus/#post-476

add_filter( 'beans_layout_grid_settings', 'example_modify_grid' );

function example_modify_grid( $args ) { 

    return array_merge( $args, array(
        'grid' => 6,
        'sidebar_primary' => 1,
        'sidebar_secondary' => 1,
        'breakpoint' => 'medium' // medium is the default but you may change to breackpoint to small or large
    ) );

}