Set filter form column in relation manager

return $table
    ...
    ->filters([
        Filter::make('created_at')
            ->form([
                Grid::make(3)
                    ->schema([
                        Forms\Components\DatePicker::make('created_from'),
                        Forms\Components\DatePicker::make('created_until'),
                        Forms\Components\DatePicker::make('updated_at'),
                    ]),
            ])
            ->columnSpan('full'),
    ])
    ...

// use filter layout like below
protected function getTableFiltersLayout(): ?string
{
    return Layout::AboveContent;
}