In order to search the ERDAS APOLLO Catalog for particular data, go to the Search ERDAS APOLLO Catalog panel on the sidebar. Here you can enter criteria for the ERDAS APOLLO Web Client to use when searching for datasets, aggregates (which represent collections of images), vector service layers (WFS), map service layers (WMS), coverage service layers (WCS), or documents. Some of the search criteria fields only appear when you select certain options in other fields.
The Search ERDAS APOLLO Catalog is accessible only in layout apollo.aspx or apollopro.aspx.