Add Home Link
To add the home link that is displayed on the sign-in page, use the following Windows PowerShell cmdlet and syntax.
Set-AdfsGlobalWebContent -HomeLink https://fs1.contoso.com/home/ -HomeLinkText Home
linkText parameter in this cmdlet is not required unless you use another value than the default, which is Home. The advantage of using the default is that they are localized to all client locales. after the sign-in page is customized, the customization takes precedence; therefore, you should customize for all languages that you want to support.