Reading through the Eve University Wiki and I found this
When using salvage drones, the drones will need to be launched into space, target the wreck, and then commanded to salvage it. They will fly to the wreck (fairly slowly), orbit it, and attempt to salvage it. After each cycle (10 seconds), as above, if one of the drones is successful, it will fly automatically back to the ship and deposit the salvage into the cargo hold. Salvage drones can also be commanded to “Salvage” without having any wrecks targeted; they will then salvage all the wrecks in your vicinity (up to the pilot’s drone control range) one by one
I don’t see the ability to tell the drones to salvage, am I missing something or is this outdated information?