I installed Powershell 7.
The default is v5 and it remains the default
But how do you run v7?
Bring up a Command Prompt (or Powershell v5) and type "pwsh".
CMD is the most interesting . . .
Here is the original CMD window
It tuns into this
When done in Powershell it does this
OK, your will look different. I'm running the Chris Titus profile.