Copy Users Between Groups

Install-Module -Name AzureAD

Import-Module -Name AzureAD

Connect-AzureAD

#use the below to find out the object Ids for the groups

Get-AzureADGroup -All:$true

$ToGroup= #insert the to groups object ID with " "

$FromGroup= #insert the from groups object ID with " "

Get-AzureADGroupMember -ObjectId $FromGroup -All $true | ForEach-Object {Add-AzureADGroupMember -ObjectId $ToGroup -RefObjectId $_.ObjectID}