Convert Excel Sheets into Desktop/Web Application for Multi user

Hi there,

Our team members are working on the Excel Sheets as of now, where I have implemented some calculation formulas and connected multi excel sheets with a single datasheet to fetch and push data among different excel sheets/files.
but it is creating problems every day,
I want to convert them (actually our calculation formula) and make them software-based to overcome errors and save time.
Please find a pdf file to know more about our requirements.

PLEASE NOTE: this software will need more features in the near future so I will need you to make it accordingly.

Thanks
Please