Plutonium

Okay thanks didn't pay attention to powerup so there is a small chance that a zombie drop a power up and then you may have perks that are not on the map if I understand ?

Hello I don't really understand how this works are the perks machine added on the maps like physically or do we have do do some command to give ourselves the perks we'd like ?

For example, I'm playing buried do I have to look for the Phd Flopper perk machine on the map or it's simply not there and I have to do some /give command?