vCO add user to Fabric Group and create a business group

Hi, currently i can use vCO to create a new Tenant (Independent AD user group, users, OU). Let different admin user can uses different URL and Alias to log into the vcac portal.

I am facing following problem.

1. How can i add this admin a/c to the "Fabric Group" thru vCO?

2. How can i add "Business Group" thru vCO? (I am using vCAC plug-in 6.0.1, there have a Preset workflow "Create a buniness group", i try to run it, but fail. the reason is it cannot set the "Machine prefix")

3. How to create a new reservation?

4. Is it possible to use the shared blue print from another tenant (vsphere.local)?

Thank you very much