In the App Store search, search for and open Configurator 2

Click the download button to install Apple Configurator

To prevent unexpected data loss, make sure the WhatsApp backup is current on your device. WhatsApp > Settings > Chats > Chat Backup > Back Up Now if needed.

Then go to Settings > Apple ID > iCloud > iCloud Backup and choose Back Up Now

Erase your device: Open Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.

Connect your erased phone with a USB cable to the computer. The phone should be on the "Hello" screen.

Click the phone to select it, then click Prepare

Check the "Supervise devices" box and choose Next

Leave server set to "Do not enroll in MDM" and click Next

Enter "CloudVeil" in the organization Name field, then click Next.

Select "Generate a new supervision identity", then click Next:

And finally, click Prepare and wait for the device to restart.

After the phone restarts, go through the setup screens. Choose "Setup Manually" when prompted. 

Then, on the Apps & Data screen, choose "Don't Transfer Apps & Data"

Open the Supervised Global Enrollment instructions to complete enrolling your device. (Instructions link below) The filtering will not be activated until this is complete.

Install Global using Apple Configurator 2