Global capacity vs Agent Capacity

Summary:

My understanding is Agent capacity defined through HR queues task should override Global Capacity.

Profile option 'SVC_OMNI_DISABLE_WORK_ITEM_AVAILABILITY_SELECTION' is set to 'All'

Agent capacity is set to 20 and global capacity to 5 , agent currently has 15 open requests in their queue.

New assignments are not getting automatically to this agent.

When I change the global capacity to 20, this agent get the request assigned.

How to capacity work? Is there an article with examples?

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