As for the question, the answer is yes, you can use the Yamaha USB-MIDI driver to connect your CLP230 Yamaha keyboard to MainStage on a MacBook Pro running macOS Catalina.
Monitor outgoing and incoming MIDI streaming signals.
Device driver for Mac OS X that handles any USB mouse.
A small player intended for playing and modifying MIDI audio files.
As for the question, the answer is yes, you can use the Yamaha USB-MIDI driver to connect your CLP230 Yamaha keyboard to MainStage on a MacBook Pro running macOS Catalina.