To install UI for Xamarin on your machine from the Windows Installer MSI file, follow the instructions below:
Log into your Telerik account and click on Products & Subscriptions from the top menu.
In the dropdown that appears choose from your purchased products or trial downloads the Telerik UI for Xamarin, and click on it. If you have purchased a collection you would need to click on it and the trial downloads page will show all trial downlads directly.
Click on Download Installer and other resources (the Download link next to the suite if you are a trial user). You need to choose the UI for Xamarin suite if you have purchased the collection and click its Browse all product files button.
Download the Automatic installation (MSI) file.
Once the download completes, run the MSI file and follow the instructions.On a 32bit machine the wizard will install the UI for Xamarin component in the following folder unless you specify otherwise: C:\Program Files\Telerik\ and the path is C:\Program Files (x86)\Telerik\ for a 64bit machine.