You can supervise the iOS devices either using the Apple Configurator or using the Device Enrollment Program(DEP).
Supervision using Apple Configurator involves hooking up the devices to a Mac whereas Supervision via DEP is entirely over-the-air. The DEP registration and approval may take around 5-10 business days.
Please use the help link to know more about the supervision and how to supervise the devices.
Yes, it is. The iOS devices can be supervised only by using Apple Configurator or Device Enrollment Program. Since DEP is not supported in your region, Apple Configurator is the only method to supervise the iOS devices.
The Apple Configurator should be downloaded and installed on a Mac with OS X 10.6.6 or later. The iOS device should have the OS version 6 or above to supervise using Apple Configurator 2.
Click here to know more about the Supervision of iOS devices.