How Do I Create a Two Command Shortcut? (Hide selection followed by gaussian blur)

I have marked his as correct however I don't fully understand the steps he went through. I can get it to record my gaussian blur but not the hiding of the mask. What I want to do is make a selection and then after I have seen my selection's 'marching ants' I would like to press a button that hides the 'marching ants' and then hits gaussian blur. I can't see as properly what my gaussian blur needs to be when my selection is roped off with dotted lines, I want to see the image as it will be shown to gauge how much gaussian blur I need to use.

I hit record on my action, pressed ctrl+H to hide my selection and then used gaussian blur but the only thing recorded was the gaussian blur. How do I add "select toggle show extras menu item" to my action as you have shown in your post? Thank you.