Select the Search Profiles you want to change, then click on Edit. You may change the Name and Description, and select (or de-select) different Collections.
See the Legend at the foot of the page for availability.
The info icon displays the details for each Collection. If the Collection URL is enabled you can Click to search the database using its own native interface in a new window, e.g. EBSCO. You will still keep your ZPORTAL session.