Temporary Programmer on Project

The project is a simple task which is to modify a reservation system to be a bit more flexible for a project; you'll have to allow the admin alter the calendar to make certain dates selectable dependent on the preference of the business-owner. In addition, allow for slots of time within that day to be created which will be selectable by the clients which will then remove it from the list of available times. You'll have to take into account the back-end and front-end and both users of the website (Administrator/Business Owner and Client). Any additional queries can be answered during the development of the program