DO NOT PM ME TO DO YOUR ACCOUNT OR SEND YOU A DUMMY ACCOUNT.
All You Need Is 1 Controller, High Level & Low Level Account
Before You Start:
Make Sure No Applications Are Open And No Other Accounts Are Logged In
If The Low Level Is A Brand New Account And Hasnt "Played" BO3 Before. You Need To Go On It Before Hand And Choose Your Specialists And Settings Etc.. (What I Do In The Video)
Now Follow The Instructions Below
1. Go On The Account You Want To Dupe And Start Up Black Ops 3. Connect to Servers And Go Into The Public Match Menu (With Create-a-Class) Sit There For About 5-10 Seconds Then Press Circle Until Your At The Very First Screen -> You must login or register to view this content.
2. Now Sit At The Very First Screen And Hold The PSN Button And Switch User To Your Low Level Account
3. For This Step There Are Multiple Ways
Option 1: About 1/2 A Second After The Blue Menu Disappears Press X Then Wait 1-2 Seconds And Press X Again.
Option 2: Spam X Till You Are In The LAN Custom Game. Wait There For 5 Seconds Then Make Your Way Online.
Option 3: When The Blue Menu Disappears. Press X Then O Straight Away.
4. If It Worked Find A Game And Get A Kill Or Get Killed Then Leave.To Make Sure It Worked Close BO3 And Start It Again
For Option 1 If You Are Getting An Error, Black Screen Or Disconnected You Are Not Pressing X At The Right Time. If You Think You Are, Try Lagging Your Internet. You Will Not Get This First Try So Just Keep Trying And You'll Eventually Get It.
Now Your Account Should Be Duplicated
I Am Not Responsible If You Get Reset Or Banned
CREDITS:
Me (RageKiing)
Chuck54321
Proof That It Works
Spoiler:
Thank you so much worked like a charm! 
