Click:
The Omnichannel list shows all the items (webchats, calls, emails, etc.) that are currently pending in all of the queues to which you are assigned. For each item, the length of time that the item has been in the queue is shown, allowing you to prioritise those items that have been queued the longest.
The Omnichannel – Summary provides an at-a-glance view of the number of items currently waiting for each channel type.