Hi,
5. It is in the wrong field (it is for the user type results): https://i.imgur.com/DwiDXcw.png
Radio button: Depending on what type of filters you use, you can change the layout from the default checkboxes. For taxnomy filters you can do that here, for post tag filters here.
This will result in radio button layout, like so: https://i.imgur.com/KCdwPkQ.png
For a single-select tag type filter it is probably the easiest to style via CSS for the radio buttons to appear as the “tags”. Each time clicking on the tab will actually activate the radio button.
I have only seen this done once, and I am not completely sure if they only used custom CSS only. Some javascript may also be needed, but I am sure that the most of it (if not all of it) is possible with only styling.
