Hello,
You need to add completed Items in work queue again.
View attachment 1557487482578.png
1-Use Work Queue action Get completed Items it will return completed items collection.
2-Loop completed items collection.
3-Use get Queue data action of the work queue. it will return data collection associated with item key.
4-add returned collection to the same work queue again it will again add the items to reuse.
Best regards,
Sachin