At our office we use Groupwise calendar to share with certain clients to plan and schedule. A client from another department had enquired about customizing a special calendar view. His needs can not be met with the existing groupwise calendar. His department of management is a fire-arms range and he needs a calendar that would enable a user to specify a certain one day in the year so he/she could view available slots for that corresponding day.
Are there third party calendars that work within groupwise? What kind of options do you have for changing the calendar?