I'm not 100% sure, but I believe so. I think Stage 3 only lets you run around in Atlas/Mercy, if I recall correctly.
You are 100% right Sir , So All I need is to wait until my 4th stage is finish downloading , I'll get back to ya and tell you if it is correct 
Thanks man , means alot 
Sincerely , Shinobi Rayko
Do we need to finish stage 4 , if we want to get into DFB group
Because im not done withthe 4th stage & when me and my group try to teleport in DFB It automatically makes me leave the group and everybody teleports to the "DFB" zone.
Please Help , I've been trying to figure out a way and ask some helpers ingame
but they all say the same thing.
Sincerely , Shinobi Rayko!