Granular day view calendar

Hi guys,

I'm new to drupal and not sure if this medium is a forum , module suggestion or both but I can use the help of some experts on booking systems in drupal.

I have searched the internet for a particular drupal module but I have not found a suitable one.

I need a module that would aid a particular booking/reservation assignment with the following characteristics.

1. It can be modified so that the calendar day view will show each hour in quater, third or half hourly divisions rather than one single hour

2. I want bookings which are being output via views to be resident within the relevant slot of the right hour. I.E: if a booking is made from 3pm to 3.15pm, that part of the hour will be displayed as booked but the other parts will display as available or something like that.

3. And very importantly, checks to make sure there are no time clashes when bookings are made.

These three things are a minimum for my project.

Does anyone know a module/combination of module that might achieve this functionality? Or perhaps you can give me pointers in achieving it?