Qfe Procedure

[Rocky38]

Although I'm familiar with the physics of Qfe vs. Qnh baro setting, I have never flown in an environment where Qfe is used as a matter of course. Does any regular Qfe user care to comment how it is used procedurally?

Is it only set on the PF or the PNF altimeter? Is it only set on altimeter #2? #1?

Is it used during departure as well as descent/approach?

Is it used for all of the descent below the transition level, or only in the approach environment?

If a given carrier uses Qfe, is it used at all destinations, or only at those destinations where the Qfe pressure is given on the ATIS? If used at airports where the field pressure is not given on ATIS, how is the appropriate baro setting determined?

Is Qfe operation required in certain countries?

Thanks -
Rocky38