Net Core Smart Garage adding features

MBSmartGarage is an Multi Branch Garage / Workshop Management System. With MBSmartGarage you can easily manage your Vehicles, Jobs, Gate Passe, Inspections, inventory items/products, suppliers, Customers, Purchase, Sales, Customer payments, supplier payments, Chart of Accounts, Banks. It has a number of built-in reports to manage stock, payments… MBSmartGarage is very easy to install and user-friendly and responsive. MBSmartGarage follows standard ASP .Net Core 5.0 MVC, C# , TypeScript coding style and use MS SQL Server database and serenity framework. Requirements: 1- App designed for one workshop I need the app to have multi workshops with the subscription plan. In that case, we have a signup page that should add some fields like workshop name and logo to create a new row in the company table and any user should be linked to this company and in any module and screen should show/save the data to be linked to workshop and branch 2-Products stock/QTY should appear per warehouse that's mean the inventory should show where the product is in the warehouse 3-we want when the workshop adds a new product can put In Price and out price, in price the price that the workshop buys from a supplier, and out price the price that the workshop will sell to the customer. 4-In the invoice when the user adds the product to the invoice the outprice show in the textbox and can be changed. 5-when the workshop adds the product the brand should be optional 6-in job card Vehicle drop down should show Brand name + Model name