When installing Visual Studio 2019, you must install the following workloads from the Workloads screen in the Visual Studio Installer:
Mobile development with .NET
Universal Windows Platform development (if you are developing for Windows UWP)
The ePortal Xamarin scaffolding extension is installed for Visual Studio 2019. This extension provides a project template for developing Xamarin apps for Android, iOS, and Windows UWP apps. It enables you to quickly develop a Xamarin app from the Web API interface exposed by ePortal, giving you access to ClearPath applications on your mobile device.
For more information on pre-requisites, installation, build requirements, and debugging options for the Visual Studio Xamarin project type, visit https://docs.microsoft.com/en-us/xamarin/xamarin-forms/