Related to my article https://hochwald.net/configure-windows-powershell-web-access/

Pswa_sample.ps1

# Cleanup
Get-PswaAuthorizationRule | Remove-PswaAuthorizationRule -Force

$paramAddPswaAuthorizationRule = @{
	UserGroupName     = 'DOMAIN\ACCESS-GROUP'
	ComputerGroupName = 'DOMAIN\COMPUTER-GROUP'
	ConfigurationName = 'Microsoft.PowerShell'
	RuleName          = 'Admin Rule for PowerShell Remote Web Access via Gateway'
	Force             = $true
	ErrorAction       = 'Stop'
	WarningAction     = 'SilentlyContinue'
}

try 
{
	# No output
	$null = (Add-PswaAuthorizationRule @paramAddPswaAuthorizationRule)
} catch 
{
	Write-Error -Message 'Unable to create the PowerShell Remote Web Access Rule' -ErrorAction Stop
}

# Get Info
Get-PswaAuthorizationRule

<#
		Id    RuleName         User                             Destination                     ConfigurationName
		--    --------         ----                             -----------                     -----------------
		0     Admin Rule fo... DOMAIN\ACCESS-GROUP              DOMAIN\COMPUTER-GROUP           Microsoft.PowerShell
#>