Month Calendar with 4 slots

Hi,

i would like to create using some plugin the possibility to reproduce in WordPress calendar for three months and display in them the availability o not for four slots every day.
It is the same behavior that the information showed in this page in every screen.
[ redundant link removed ]

I am look for a plugin that allow me mark the bussy days and display in the Page the calendar for the user can look for tha availability of every day.

Could you help me?

Regards.

The page I need help with: [log in to see the link]