Setup a featue code to conference in the operator?

I am using SNOM Phones and the latest version of FreePbx.

Can I setup a feature code that will let me conference in an
specified extension? Something like *0 and it will do a conference function on my phone and dial extension 5111 automatically?

Say that I am talking to someone on my phone. I want to conference in the operator and I don’t want to have to remember the 5111 extension… I’d like to be able to do something like *0 and it conferences in my 5111 extension…

Can I do that with asterisk ( or my snom phone )

Thanks - jack