You can specify your custom coverage information in one of two ways:
Using Holdings Management navigate to the package or title whose coverage you would like to specify using either the Titles or Packages link in the sub-navigation. Once you have located a title whose coverage you would like to customize, in the Coverage section you can set Custom Coverage. You can add multiple Custom Coverage fields by clicking on the (+) to the right of the date fields. Then type in the coverage in the Custom Coverage Begin Date and End Date fields. You can also indicate custom embargoes via the Custom Embargo field.
Using the Download feature download your title list you can then specify custom coverage information using the CustomCoverageBegin and CustomCoverageEnd columns on your file. You can also indicate custom embargoes in terms of days using the CustomEmbargoDays column.