From Bright Pattern Documentation
< 5.2:Faq
Virtual Queue Configuration
How do I set up virtual queuing for my inbound services?
Virtual queuing (VQ), also known as Bright Pattern's callback option, is enabled for an inbound service from the Find Agent block settings of the service's scenario.
To enable virtual queue, you should determine which service will have VQ enabled, and then follow all the steps given in the Virtual Queue Tutorial, section Configuration.
For examples of a VQ-enabled scenario, see the Virtual Queue Tutorial.