Originally Posted by DoctorOhh
Yes. Search on tags:"=Kriminalroman"
then save the search (right of the search bar). Now go to the Restrict to
dropdown (left of the search bar) and select the saved search this will open your library restricted to the saved search, as if it was a database unto itself.
I open my library with only my Finished Books showing. When I want to clean up some of my non-finished books I go to the Restrict to for my working library which shows only books with that have the tag working.
Essentially using the Restrict To feature allows you to create independent virtual libraries within one giant library. I wrote about it here
Dropdown arrow to the right of the library icon and you can switch between libraries.