Add group to many SharePoint Online site through PowerShell

Question

We have an existing Microsoft 365 group, like group@domain.onmicrosoft.com.

We have over 100 SharePoint Online sites and we want to add this group as a editor into 30 of these sites.

We want to do this through powershell so we want to script codes.

Any help with this would be greatly appreciated!

Answer 1

1.Create a csv file as following picture show.

2.Run PowerShell codes as the administrator of these site collections.

 $Credentials=Get-Credential  
 $Group = "group@domain.onmicrosoft.com"  
 $PermissionLevel = "Edit"  

 $filePath = "C:\sites.csv"

 $csv = Import-Csv $filePath  
 $sites = $csv.URL  

 ForEach($_ in $sites) {  

      Connect-pnponline $_ -Credential $Credentials  

      Set-PnPWebPermission -User $Group -AddRole $PermissionLevel  -Identity "/"  

 }  

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Answer 2

You can use the PnP module and the Set-PnPWebPermission cmdlet for that: https://pnp.github.io/powershell/cmdlets/Set-PnPWebPermission.html