Domain Controller placement for a 3-Node VXRail

HI,

I am having an environment with 3-Node E560F VXRail. There are 2 virtual Domain Controllers in this environment which is residing within this VXRail Cluster. I need to make sure that while bringing up the VXRail Environment, after a Poweroff, the Domain Controller VM's should be booting first.

I have checked the VM Startup/Shutdown. But i cannot change anything, when i try using "administrator@vsphere" account.

VXRail Version is 4.7.300

Any suggestions, most welcome.