How to delegate Windows Azure account to another Live Id account

I have a live id account and a subscription to Windows Azure. I would like to delegate (or add additional) account to the same Windows Azure subscription.

How can I achieve it?

What you could do is add a co-administrator to your Windows Azure Subscription by providing email address (Microsoft account) of the co-administrator. To do so, go to the portal and click on SETTINGS and then ADMINISTRATORS tab and then click on ADD icon on bottom as shown in the screenshot below. The co-administrator would then have the capability to login into Windows Azure Portal and manage that subscription there.