To view your deleted shifts, go to Tools → See Deleted Shifts on the Rotas page.

You will then be able to see a list of all deleted shifts. You can use the date range filter to search for shifts deleted during a specified time frame, as well as the Employees, Roles, and Locations filters to further refine your search.

The page will show your who deleted the shift and when, as well as the shift details.

To view more information of the deleted shift, click on the record – this will then give you the shift history.

You can also use the Restore link at the right of any shift to undelete it, provided it doesn't clash with any shifts currently on the rota.