You will not be able to use this function for searching all the databases available through the University of Adelaide Library. You can always search in the native database and then transfer your references into your EN library.
When searching the UofA Library - you will only be able to search the catalogue - you will not be able to search for the contents of books and journals.
Using a connection file (online search function) from within EndNote allows you to connect to, search, and import references from freely available resources such as library catalogues and PubMed and a few others such as Web of Science.
When you search a database using this option - you can choose to put the results direct into your EN library or import the references into a temporary library.
The first option only allows you to view your own library references - online search groups are not visible (Local Library Mode)
The second option imports into a temporary library (Online Search mode) - references you wish to keep can be copied to your EN Library using the Copy References to command on the EN toolbar
The third option imports direct into your library (Integrated Library & Online Search Mode).
This feature is available when you download the EN program from the University of Adelaide ITS website.
Select more to choose it from the list of Connection files and add it to the list
You can download the Connection file to the UofA catalogue from here:
These connection files may already be provided with your version of EN if downloaded from the ITS website.