Office Administration System (Multi Company Comfortable)

It is required to build a project to get manage the following tasks online with an 'APPROVAL' process. The platform also should comfirtable with the multi company (Admin able to use the system for all the companies and users for selected (One or many) comapnies). So, the document reference numbers muct be dedecated to each organization. However, Most of the models required to get input data and generate the PDF forms. data base structure has attached herewith for the more dedaits

Payment Voucher
Leave or Absence Request
Employee Exit Checklist
Employee Vehicle Checklist
Employee Vehicle Benifit
Internal Memo
Employee Vehicle Return
Employee Notice & Termination
Employee Expenses
Inventory
Project Costing
Production Reports
Ticket based task schedulling and follow up system