Here is the best method for finding DVDs in the library collection. You can borrow these to watch on campus or take home.
Enter a title or subject keyword in MultiSearch:

Choose the Audio Visual limiter in the resource type on the left hand side:

This will give you streaming video options as well as DVDs held by the library. If you would like to see DVDs only, and exclude streaming, choose Automated Retrieval Collection from the Collection limiter as follows:

Your results list will show the two choices you have made, Audio Visual and Automated Retrieval Collection (see below).
The Automated Retrieval Collection refers to the material held by Macquarie on site, but not on the shelves. When you request this material it is available for collection 20 minutes later.