Enabling workgroup queues requires the following to be set in your config.tdsl file.

wg(class: tigase.workgroupqueues.WorkgroupQueuesComponent) {
    'default-muc-domain' = muc.atlantiscity


Be sure Tigase MUC component is active as it is required by wg component.

wg has a couple of different paremeters that can be passed, default-muc-domain is required. The other two are optional.