Import list into Event Booking?

I have a couple of questions about your program. I would use it mainly for managing volunteer events or projects.

1. I currently have a database of about 1,100 volunteers. Can I import them into your program?

2. Can one event have multiple shifts and or dates? For instance: Christmas Warehouse Volunteers #1 8:00 - 12:00 and #2 12:00 - 4:00.

3. Will volunteers be able to see the calendar layout to sign up for an event (project in my case)?

4. Does the latest version have an RSS feed option?

Thank you for your time and consideration.