Q: How can I view available dates?
A: From the Main Calendar on the Calendar View tab:

Available dates are the days that do not have a blue reservation bar. Dates that have a diagonal blue line tentative reservation bar are also available.

From the Sidebar Calendars on the Calendar View tab:

There are many ways you can make dates available:

   1. Cancel the reservation.
   2. Delete the reservation.
   3. Change the reservation status to tentative and the dates will display as available.