Hi, new to the site

I am working on a hotel system for my high school project, going well, in the end it will control the ordering of food and bookings of rooms etc...

The food part of it is working, but now came to the room booking bit and decided to try the monthview control so that I can see when rooms are already taken etc..but i dont know anything about the month view! So does anyone know how i can click on a date on the calander and it shall become bold? much appreciated if anyone does.

Thanks!