Hi Ahmed

The backoffice of Umbraco is built with angularJS, so to extend your admin pages, you would utilise this to create either a custom Property Editor / Content App or Dashboard.

There are some examples in the documentation:

https://our.umbraco.com/documentation/Tutorials/Creating-a-Property-Editor/ https://our.umbraco.com/documentation/Tutorials/Creating-a-Custom-Dashboard/ https://our.umbraco.com/Documentation/Extending/Content-Apps/

It's also I think still - possible to map an MVC route via the backoffice, if you want to avoid working with angularJS: our.umbraco.com/Documentation/Reference/Routing/Authorized/#mvc-controllers-for-the-backoffice But then your UI won't necessarily look the same as if you build using the angularJS backoffice components.

There is a great package that shows off some of the components of the backoffice: https://our.umbraco.com/packages/developer-tools/ui-examples/

Finally finally hopefully 'for the win' - if your list of employees is in a database table, you could make use of a package called UI-O-Matic

https://our.umbraco.com/packages/developer-tools/ui-o-matic/

This will build a custom backoffice experience based on your database table, and even allow the content to be edited!

regards

Marc