A saved Catalogue file is generally used to define the data to display in a report (e.g. Report for Bibliographic details).
It is possible to search in Stockitem, find items and XReference to Catalogues for the items found in the Query e.g. All Videos. Once the Stockitems are displayed in a table, highlight the items. Once highlighted, choose XReference from the top of the table, and choose Catalogue. It is then possible to save the items to a file.
For example, have a File saved named Bibliography. This can be used each time for Bibliographies, emptying (using Empty [F2]) if necessary.
The File can then be used in Reports/RepBibliographic