$ php composer.phar require femike/yii2-schedule-week-time-select "*"
or add
"femike/yii2-schedule-week-time-select": "*"
to the require section of your composer.json file.
use femike\widgets\ScheduleWeekTimeSelect;
// Select with ActiveForm & model
echo $form->field($model, 'param_name')->widget(ScheduleWeekTimeSelect::className());