Autoaim while in background? Possible?

I'm running into one big problem with what i would like to do atm.
In order to accomplish what i would like to I need a client that would be able to run Auto Aim in the background (shooting enemies while that particular projector isn't "selected")
I feel like this has been done in the past? Nilly?
If theres a client out there let me know or any advice will be helpful

So what your'e asking for is a client that wouldn't need to be open for it to kill enemies?

Yeah pressing ‘I’ by default to have auto shoot turn on, auto shooting is disabled when the window loses focus, the client could be modified to disable the automatic turning off of auto shooting, Unfortunate it’s not something I’ve done before.

You need a client with auto aim