Hello SharePointers, Below are the powershell commands to set up the access requests in SharePoint Online.

$URL= "https://laks.sharepoint.com/sites/happy/"
$AccessRequest="SharePointadmin@mycompany.com"
$Cred = Get-Credential
$Cred = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($Cred.UserName,$Cred.Password)
 

   
    $Ctx = New-Object Microsoft.SharePoint.Client.ClientContext($URL)
    $Ctx.Credentials = $Cred
 
   
    $Web = $Ctx.Web
    $Ctx.Load($web.AllProperties)
    $web.RequestAccessEmail
    $Ctx.ExecuteQuery()
 
    #Set Access request Email
    $Web.RequestAccessEmail =$AccessRequest
    #Member settings
    $Web.MembersCanShare = $True
    $web.AssociatedMemberGroup.AllowMembersEditMembership = $True
    $web.AssociatedMemberGroup.Update()
 
    $Web.Update()
    $Ctx.ExecuteQuery()

Happy SharePointing Folks 🙂