You can change or delete a template custom field from the Custom Fields tab on the Templates page. To edit custom fields, you need the Custom Fields permission on the Template row.
Edit or delete a template custom field
Go to the Templates tab and click the Custom Fields tab near the top of the screen to open your custom fields menu.
Hover over the custom field you want to edit and click Open.
Make your changes. You can:
Edit the field name
Add or remove options from a dropdown field
Turn sensitivity on or off (Text Fields only)
Delete the field
Deleting a custom field is permanent.