zammad/db/seeds/ticket_priorities.rb

Ticket::Priority.create_if_not_exists(id: 1, name: '1 low', ui_icon: 'low-priority', ui_color: 'low-priority')
Ticket::Priority.create_if_not_exists(id: 2, name: '2 normal', default_create: true)
Ticket::Priority.create_if_not_exists(id: 3, name: '3 high', ui_icon: 'important', ui_color: 'high-priority')