What happens to a work item assigned to me while I am away?
If it falls inside the rule's scope it passes to a coverer with nobody intervening. Work items you already held when the absence started stay with you; hand those over with Bulk assign.
Where a rule names several coverers, each incoming work item goes to the coverer who has received the fewest from this rule so far.
Related pages
Coverer Setup and Management - where this is covered in full.
Automations and Workflow - more questions on this topic.