Ah right. I don't have any of these things either but from what I've seen, when you have the Zwift Play controllers both the left and right ones appear in that middle bottom box and you select them both. See below:
Having said that, as I've said before I don't see why you'd really need to connect both the click controller and the Zwift Play controllers anyway, because the Zwift Play controllers can do the job of the click controller (plus other things). But that said, it might be possible so you would then have two different ways of changing gear (click controller and/or zwift play controllers), and the click controller would appear and be able to also be selected in the above drop down list along with the two play controllers
