PowerShell Custom Columns Grid View

I'm sure i've done something wrong, but i'm playing around with accessing multiple office 365 powershells and it works fine, but I want to add custom columns in my grid view. 1 column saying "Client Name" another saying something else. This is what I've got so far.

# Prompt For Login

[void][Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic')

$title = 'Email Address'
$msg   = 'Enter your email address:'

$emailAddress = [Microsoft.VisualBasic.Interaction]::InputBox($msg, $title)

# Connect Office 365

if (Get-Module -ListAvailable -Name ExchangeOnlineManagement) {
    Write-Host "Module Exists"
    } else {
    Write-Host "Module Does not Exist, Installing..."
    Install-Module ExchangeonlineManagement
}


$clients = @("ClientA",
             "ClientB",
             "ClientC",
             "ClientD",
             "ClientE")



$client = $clients | Out-GridView -Title "Choose a Client" -Passthru

# Make The Connection

Connect-ExchangeOnline -UserPrincipalName $emailAddress -ShowProgress $true -DelegatedOrganization $client

The key is to send objects to Out-GridView.

This should help you get where you want:

$clients = [PSCustomObject] @{Client="ClientA";OtherData='Something'},
           [PSCustomObject]  @{Client="ClientB";OtherData='You'},
           [PSCustomObject] @{Client="ClientC";OtherData='Want'},
           [PSCustomObject] @{Client="ClientD";OtherData='To'},
           [PSCustomObject] @{Client="ClientE";OtherData='Show'}




$choice= $clients | Out-GridView -Title "Choose a Client" -Passthru

#the output from Out-Gridview is now an object, so use dot-notation to get the client.
Connect-ExchangeOnline -UserPrincipalName $emailAddress -ShowProgress $true -DelegatedOrganization $choice.Client