To use Azure resource manager (ARM) based deployment, the tenant administrator of the organization that owns the subscription ...

To use Azure resource manager (ARM) based deployment, the tenant administrator of the organization that owns the subscription must grant access to the applications on the tenant. To do this, or to verify if this exercise has already been completed, click the Authorize link for the tenant that owns the subscription that you will use for deployment. If access has not been granted, or if you are not the administrator of the tenant, ask your administrator to complete the activity so that you can deploy ARM-based topologies through LCS.