online work scheme (mobile friendly)

I have attached excel files. I want on admin side, to be able to add/remove employee. And then be able to give them when to start and end work. I want to be able to edit by month. And i want to be able to fill inn the number that are in the excel file (kk, frokost, lunsj, kveld, buss) day by day, and divide it by number of my choice, and then show it up under each category, it shows how many shifts i need per category. Admin should be able to publish shift week by week, even if edited by month. Admin should be able to make changes even if the shift is published. I want the public side to show published shifts, by published weeks.