Ref: "It's pretty simple to do. Open a commentary that covers the whole Bible (no matter how many volumes). Just open one volume. (Logos automatically puts all the volumes of a commentary set in a series.) Open a Bible. Under the 3 stacked dots menu, select Link Set A (or any other letter you choose). Do the same for the commentary series, using the same letter you chose in the Bible. Now type a reference in the Bible. Your commentary will jump to that reference."
I used the menu to link books, but the set of books( Interpreters Bible) did not link. Only the volume on my screen linked with the Bible selection. I must need more instructions.
