Employee work schedule software project

Please go to [login to view URL], [login to view URL], [login to view URL] to get an idea for what I need. I need a software developed that will allow employers to assign, track and manage their employees work schedule. Each employee should have the ability to edit their schedule upon approval for their manager, the employer. They should be able to access the site from anywhere there is internet connection. If you have experience is software development for work schedule management please give me a quote for this project.