Adding a link on Requester Homepage to another instance template

Adding a link on Requester Homepage to another instance template

Hi,
How do you add a link on the Requester Homepage of one instance to a template on another Instance?

I've setup a button with Action Type URL to the relevant templates URL

But when you click the button you get the below error, I believe it's looking in this instance for that template.

                  New to ADSelfService Plus?