Change turbo to a megane II 1.5 dci

Good I am new in this and I would like to have guidance to change the turbo of a Meganne, do you have to pick up the engine? Remove the bridge? I barely have access behind the engine thanks in advance in advance

It can be done either way, with the motor installed or removed; it will depend on your skill and comfort level, nothing more.

Thanks, but with the motor still in place and without removing it, I think it's impossible to take it out. There's no access from anywhere; it's extremely narrow, and even with lifts, you can barely see any parts or screws to disassemble. What I want is to avoid removing the truss and motor, if possible. THANK YOU VERY MUCH FOR YOUR HELP. Oh, and the manuals I've consulted always explain how to do it with the motor removed. I was wondering if there was a manual that explains it with the motor in place, but I can't find one.
THANKS AGAIN FOR YOUR HELP, YOU'RE VERY KIND.