If you do not want to open and close queues using business hour schedules, apply the Default 24/7 schedule to the queue.
You can open and close queues automatically by assigning them a business hour schedule. Schedules enable you to customize the hours of operation for individual queues. For example, if your business operates 24 hours a day, but specific queues are open from 9-5 only, you can create individual business hour schedules that will open the queues at 9 and close them at 5.
For information on creating business hour schedules, see "Creating and modfying schedules".