I need to file an extension for Iowa (fed and state) and Nevada (federal only). Can I do this all at once in one extension filing right now? or 3 different filings?

Where do I begin?  I have to file an extension today for Iowa State and federal, and I also need to file an extension for Nevada federal.  Will the easy extension link allow me to take care of both state and federal for Iowa and... federal for Nevada at the same time?  Nevada does not have state taxes.  Please and Thank you.  Then after I find out, where do I begin?