Ticket services is feature in Xodox CRM that allows you customer to select to what service/product this ticket is related when opening new ticket.

Eq.

1. Product/Service 1
2. Product/Service 2
3. Product/Service 3

When your customer will open the ticket the admin will know that this ticket is related to specific service.

You can easily enable/disable this option from Setup->Settings->Tickets.

To create new ticket service navigate to Setup->Support->Services.