We should be able to add a homepage only sidebar option in the next theme update.
Just a bit of background on why it wasn’t there in this theme and Ibsen. Previously we received a lot of questions asking how to remove the sidebar from the homepage as a lot of users simply didn’t want it, so it was decided to make Ibsen and Cordero with no sidebar on the homepage.
Hope this helps, and please look out for the next theme update with an optional homepage sidebar.