In an  event, there are scenario where you want to hide one ticket under another  ticket. For example  you want  Ticket T2 to be active only  when the person decides to buy ticket T1. in this case, you need to  decide the Parent Ticket T1  for the   Ticket T2. This way , a rule is defined and set for the availability  of the Child  Ticket.  

In order to facilitate this, an option is provided  in the Ticket page under setting option  where you  associate the parent ticket  with the child ticket.    

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