I’m only able to get this to work for the first synth, but not the other two. If you go SCENE SETTINGS / Program Change Mapping, you can select 8 presets to switch between. This works as should - however - how can you do it for the other 2 synths? You only seem to be able to program change the first synth.
Hey there @domwood, hope you’re having a great Friday. Welcome to backstage
When you click on one of those presets, you can select which engine is being targeted. With that said each of the presets is limited to switching one engine. So you set the 1st preset to Engine 1, 2nd preset to Engine 2 and 3rd preset to engine 3. You’ll also need to be sure that the Channel of your Program Change matches the MIDI channel of each engine.