What is a voucher? A voucher is the registrant’s e-ticket. Once they have completed the registration process they should print this out and take it to the event. At the event, the barcode on the voucher is scanned and their attendance is recorded. Typically, the link to the voucher is given in the confirmation email sent to the registrants and/or is included on the last page of the registration process, called Complete. If you want to add it to the Complete page, you define it via General Settings, see section Edit general settings.
You can only create vouchers at event level. If you clone an event, the vouchers are also cloned.
Don’t forget – where possible, use dynamic fields in your vouchers to keep rework to a minimum. An example is #event_name#. See section Dynamic Fields.