I would like to offer Virtual appointments for part of the day (e.g., morning/early afternoon) and In-Person appointments for another part of the day (e.g., evening). Can I set that up?

Yes, you can absolutely achieve this. Create separate time slots for each appointment type:

• Use the "Virtual" slot appointment type for the morning or early afternoon hours.
• Use the "In-Person" slot appointment type for the evening hours.