This is a great request, as the quest system in The Witcher 3 (especially the Complete Edition/next-gen patched version) is notoriously fragile. Using the wrong console commands can break your save.
If you are looking at a mod or a specific guide claiming to "patch" this functionality into the game, The "Patch" Review: Reliability vs. Risk witcher 3 complete quest console command patched
Scenario: You are playing the "Scavenger Hunt: Griffin School Gear" quest. You found the chest, but the game did not register it, and the quest marker is stuck on an empty chest. This is a great request, as the quest
releasefollower command if available, or simply fast-travel to a different map region.Here is the most important part for PC players: While the command is patched in the vanilla v4.0+ game, it is not dead. Fix: You may need to teleport her away
Some players use the xy teleport command to jump to the end location of a quest, hoping the game automatically progresses. Example: xy(2088, 1456) to land in front of Uma after the "Ugly Baby" quest.