Middle & R Mouse Clicks equivalent on Mac Keyboard?

I’ve been a Mac digital artist/photographer for over 30yrs, using a Wacom tablet -and rarely a mouse. (Blender Noob) I have 3 button mouse, but due to hand injury, prefer the Wacom tablet & stylus. I can’t find a keyboard equivalent for Middle & Right mouse clicks for Blender. I would think that Command/Option + Click (or similar) might work, but none of the combinations will initiate a middle or R mouse click in Blender. Suggestions appreciated.
Are there no Mac users in Blenderland? None of the tutorials I see even mention Mac functions, as is often done for other 3D apps.