Custom field values

how do i set custom field values? for some custom fields, such as the genre or season that you enter for an event, you have the option to choose from different predefined values if you want to add new options, go to settings > custom field values add new values to add a new option, click on the desired custom field and add a new option afterwards, you will immediately be able to use this value on the event page or in a filter would you like to add an additional custom field ? please contact support