Remove Column

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/** ==================================================
 * Filter of Fixed Bottom Menu
 *
 * fbm_column
 * @param int $column  column.
 */
function fixed_bottom_menu_column_remove( $column ) {

	if ( 118 === get_the_ID() || 125 === get_the_ID() ) {
		$column = 4;
	}
	return $column;

}
add_filter( 'fbm_column', 'fixed_bottom_menu_column_remove', 10, 1 );

Make the column four columns, specifying a submission ID.