The Linked items tab shows resources that are associated with the current record. This is distinctly different than a resource type link. Linked items could be other books that the borrower of the first book might like to read, such as books by the same author, the associated feature film or website, supplemental resources or books of a similar genre.
To add a linked item click 'Find Resources' at the bottom of the record card of the first resource and locate the second resource. Alternatively, if the resource has a barcode then type in the number of the resource and click 'Add'. To remove a link, select the item to remove in the list and click 'Remove Link'.
To add more than one linked item at a time using the Find Resource option, use 'CTRL' and 'SHIFT' to select the records.