Water pump, V-belts etc

Hello together, I would like to be interested if someone has had to change their water pump? If so, what is the fun (I mean completely with tension/turning rollers belt) I was told by an acquaintance that this would only be possible in the Volvo workshop because the water pump has to be trained somehow during the new installation with the software or something? I can’t believe that somehow because the W-pump is finally a mechanical part —- gruss attila