In order to enable ProTips (automated workload balancing between hosts, like VMWare DRS) you have to integrate VMM with SCOM
Here the prerequisites (I assume SCOM 2012 and SCVMM 2012 up and running) :
• An account which is a member of the Operations Manager Administrators user role
• An account which is a member of the VMM Administrator user role
• SQL Server Core Library version 6.0.5000.0 or later
• Windows Server Internet Information Services Library version 6.0.5000.0 or ...