In order to do more than use another trainer in ERG mode in that single gear, the CLICK (or PLAY) need to communicate to the non-Zwift trainer (via Zwift app) to apply Virtual Shifting for any use other than ERG.
In order to do more than use another trainer in ERG mode in that single gear, the CLICK (or PLAY) need to communicate to the non-Zwift trainer (via Zwift app) to apply Virtual Shifting for any use other than ERG.