You can do this by enabling the Developer tab in Excel Options, selecting Design Mode, and inserting a Button form control.
When you insert the button control, Excel should open the macro dialog with a macro name like Button1_Click. When you see that, click New on the macro dialog. This will open the event handler for the Button#_Click event in the Visual Basic editor. You'll need to add a line of code to the event handler, so that it looks like this...
Sub Button1_Click()
' this is a comment...
ThisWorkbook.CustomViews("CustomViewName").Show
End Sub
Replace CustomViewName with the actual name of the view you want to show. When you leave design mode and click the button, it should show your custom view. Just add a button and repeat for each view.