Hardening of multiple VMs by making changes at one place

I want to right some rules which will harden my VM. What i was reading is we can do hardening rules for the VM by passing information in the .vmx file or going through Advance settings of the vm for the rules.

  I have also read we can make a change in /etc/vmware/config file and this will reflect in the VMs. I tried to  make changes in this file and tried to see in the individual VM for the information, but cannot see that information in the vmx / advance options

  Tried with :

   vi /etc/vmware/config

   isolation.check tools.unity.push.update.disable = "true"
   isolation.check tools.hgfsServerSet.disable = "true"
   isolation.check tools.memSchedFakeSampleStats.disable = "true"
   isolation.check tools.getCreds.disable = "true"

isolation.tools.copy.disable = "TRUE"
isolation.tools.paste.disable = "TRUE"

Whats the best way to harden the VM, and also i want a central place where i can make change and that can effect all my vms.