This article will show you how to do the following:
Assign an existing Agent to a call Queue
Note: See Article: How To - Add/Remove Members to add users to the Call Center before assigning to a Queue/Campaign.
Click the Apps icon at the top of the page.
Click Call Center from the apps list.
Click Queues or Campaigns on the left.
Select the desired Queue/Campaign.
Click the Members tab.
Click the Manage Members button.
Available members will be displayed on the left, while current members are displayed on the right. Click the desired user and then click Assign/Unassign to Queue.
Note: Member roles can be set here as well, by clicking the Role dropdown and selecting Agent or Manager. An agent must be unassigned from the call queue before they can be switched to a Manager role.