You can follow 02 link below to clone the VM on your VMWare ESXi 6.0 without vCenter plugin.
You need to modify the MAC Address after you clone the VM. After that reboot server to apply new configuration.
Depend on which OS you need to want to deploy. Example : I want install Red Hat and after that I want to clone this VM to another ones.
You shoud read this answer below to modify the hostname and ip address after copied :