Sharing Calendars

[Trying to Figer this out]

I need two calendars at work. one for my daily business concerns and one
for staff scheduling. I can share the staff calendar no problem. When
someone wants off, I want to look at the staffing calendar and block out
there name. That way other employees can see who is off and or if that
particular days is available to request off. How can I have changes made to
the staff calendar automatically flow into my business concerns
calendar.And, since I have the staff calendar shared, while at home using
the exchange server I can't view my business concerns calendar. How can I
share more than one calendar?

Thanks for any help!