In Powershell, type $profile.
PS C:\Program Files\Microsoft\AxFuzzer> $profile
That points to where your profile is stored at. This is a powershell script that executes upon the start up of any powershell prompt for the current user. Go ahead and make the file. In my case, I made a new file at the location by typing this:
new-item $profile -itemtype file -force
Now, open the file and you can put in things like this:
Every new powershell prompt that you excute will now have executed the hyperv.ps1 file. I've placed mine on a network so I can always load the latest copy on all my computers.