Task planner

You need to write a good scheduler with the ability to edit records as in exel, open files by time, sound, with a beautiful design and many other chips.
In fact, a serious project, which I plan to attract one or more people and actively promote it to the market. With those who are ready to take up the project, I will already talk about everything in detail. In the first stage, it is important to converge on opinions and ideas.