The VuFind public catalog is designed to facilitate the creation of canned searches. These are searches that you can embed in an HTML link on your website. Canned searches, just like regular ones, can be scoped to show only works which are owned by a particular library. To define the URL for a canned search, use VuFind's Advanced Search function. Once your search is returning the results that you want, you may copy the URL from the location box in your browser.
For instance, you can search for works about children and dogs, which are held by the Susquehanna County Free Library. The search screen looks like this:

The resulting URL looks like this:
http://evergreen.palibrary.org/vufind/Search/Results?join=AND&bool0[]=AND&lookfor0[]
=Dogs&type0[]=Subject&lookfor0[]=Children&type0[]=Subject&lookfor0[]=Susquehanna+
County+Free+Library&type0[]=institution&submit=Find&illustration=-1&daterange[]=
publishDate&publishDatefrom=&publishDateto=
You could use the URL as shown and it would work. However, since it did not specify a year of publication or a preference regarding illustrations on the Advanced Search screen, the URL can be shortened by removing some of the unnecessary parts. The unnecessary parts display above in red. The resulting URL looks like this:
http://evergreen.palibrary.org/vufind/Search/Results?join=AND&bool0[]=AND&lookfor0[]
=Dogs&type0[]=Subject&lookfor0[]=Children&type0[]=Subject&lookfor0[]=Susquehanna+
County+Free+Library&type0[]=institution&submit=Find
The HTML tag for this search looks like this:
<a href="http://evergreen.palibrary.org/vufind/Search/Results?join=AND&bool0[]=AND&
lookfor0[]=Dogs&type0[]=Subject&lookfor0[]=Children&type0[]=Subject&lookfor0[]=
Susquehanna+County+Free+Library&type0[]=institution&submit=Find" alt="Search
Susquehanna County for works about children and dogs">Children and Dogs at Susquehanna</a>
To make it easy to see what was added to turn this into an HTML link, the HTML parts display in blue. Paste the link into your HTML page and you are ready to go.
One hint to help you define scoped searches: you can use any of the location fields (Region, Library District, Library Group, Library Institution, or Library) to define your search scope. However, all of these search types require an exact match to return results. In other words, you must put the region, district, group, institution, or library name into the search box exactly as it appears on the Advanced Search Scoping screen.