I'm learning xamarin and development for mobile. I have seen several examples of how to set up a small application and I see that practically everyone starts like this: Blank App (Xamarin.Forms Portable) or in Portuguese. It turns out that when I create a new application, I do not have this option. I have already updated the xamarin in my machine and nothing. When I type xamarin in the search field, it shows me several other options but less this one. When I open a Blank App is for Android only. How do I configure or are there other options for me to do that is equivalent to that, ie develop for all three platforms at the same time?