Switch Skype users configuration from "Audio and HD video" to "Audio and video" using powershell

From an MS tech:

1. Open the powershell command prompt and run it as an administrator.
2. need to download Skype for Business Online, Windows PowerShell Module and install it. Find the below link for download

https://www.microsoft.com/en-sg/download/details.aspx?id=39366

1. run the below cmdlets

1. Set-ExecutionPolicy RemoteSigned
2. Import-Module LyncOnlineConnector
3. $credential = Get-Credential      ( Enter Global Admin Credentials)
4. $session = New-CsOnlineSession -Credential $credential

             5.Import-PSSession $session

1. Create one .csv file having UserPrincipalName of all users and run the below command adding the file path

$a = Import-Csv "<C:\Users\Admin\Desktop\SFBuser.csv (file:///C:/Users/Admin/Desktop/SFBuser.csv)>"

$a | ForEach-Object {Grant-CsConferencingPolicy -Identity $_.UserPrincipalName -PolicyName BposSAllModalityMinVideoBW}