Before the module installer can be used, the
PSSModuleInstaller module must be imported into your PowerShell session like so:
Import-Module PSModuleInstaller
To inspect the functions this module exports type:
(get-module PSModuleInstaller).ExportedFunctions
Once the PSModuleInstaller module is imported, you can learn how to use the commands with the PowerShell Get-Help cmdlets. For example:
Get-Help -full New-PSModuleInstaller