Can't link a scripture or highlight to another scripture, etc

I have the new Gospel Library 5.0 installed, using GL for Windows on a new PC. I have tried several times to link a highlighted phrase in a scripture to another scripture. I am selecting the "Link" option that displays with the highlighting, but nothing happens. I have a highlighted verse with some notes included. I would like to ADD another link to another scripture - again, there is no option to let me do so.