How to set posh-git customization variables globally?

Question

I have tried these two:

• $global:GitPromptSettings.DefaultPromptAbbreviateGitDirectory = $true
  
• $GitPromptSettings.DefaultPromptAbbreviateGitDirectory = $true

But neither of these changes the value globally. When I open a new instance of PowerShell, the changes are not applied there, the same for VS Code

Useful info:

• I have PowerShell 7.2.1
• I am using Window's Terminal app from Microsoft Store

Any suggestion gratefully received. Thanks in advance.