I need to develop application to share tasks and manage workflow between team members.
Usecase: Installation of boiler. There is group of sellers , group of installers, group of suppliers and project manager. Installation of boiler goes through several stages (first offer, checking the area, price offer, price acceptance, order of boiler, supply of boiler and installation of boiler). Every case same stages, In the excel sheet we have particular names responsible on every grou - for sales, installing and supplying of the boiler. The app should generate tasks notification if anything new is added and list of tasks for each team member, Project manager will give permission who should see which task, also all member should be able to share and upload documents, All should work on iOS, Android and Windows, Please offer a price for such app