site to manage company work

my project involves the internal management of a company. 1) will be a backoffice (the theme will be delivered to the programmer); 2) create access sessions with permission levels (example: admin, customer, seller, eccc) 3) access pages to: invoices, contracts, work timelines, products, compensation for work pages will be visible only with levels of permissions to users. 4) management and creation of invoices for sales and pdf; 5) internal chat among users; 6) sending emails in smtp from the management; 7) calendar appointment management; 8) summary of work in progress and concluded with progress bars; 9) internal accounting with pdf upload; 10) pdf of list of income and expenses by month / quarter / year; 11) quarter and annual turnover pdf; 12) creation of online contracts and pen signature on tablets, send the pdf file with the signatures to the client.13) push notifications to communicate the progress status; 14) login also with social; 15) Facebook page views, instagram, 16) product pages; 17) page fees; 18) creation of invoicing for our sellers; 19) list of commissions that the sellers, reporters, customers have shared with their work. I reserve the right to send a graph of the details of how the project is developed