When you switch an activity on, Panova records a **placement**: the
activity, where it runs, and the rules you set for it.

## Scene-level activities

Field notes, Evidence at a pin, Scavenger hunt, Sort into contexts,
Spot the issue and Pin the space run on **individual scenes**.

The same activity on two scenes is **two independent placements**.
Each has its own attempt limit, its own scoring rule, and its own
attempts. A learner's work on scene 3 has nothing to do with their
work on scene 7. That is deliberate — a scavenger hunt in the kitchen
and one in the cellar are different tasks.

## Whole-experience activities

Student versions, Order the sequence, Wayfinding challenge and
Branching scenario bundle **every scene into one activity**. There is
exactly one attempt per learner per experience, because the task only
makes sense across the whole thing — you cannot sequence scenes
"within scene 4".

## They do not mix

An experience holds **either** one whole-experience activity **or**
any number of scene-level ones. Never both.

This is not an arbitrary restriction. A whole-experience activity
already claims every scene; adding a scene-level one on top would give
the same scene two different owners with two different sets of
attempts, and no honest way to combine them into a grade.

> An experience holds either one whole-experience activity or any number of scene ones — never both. Each placement keeps its own rules and its own attempts.

## Copying an experience

Duplicating an experience copies its placements and their rules, not
just the fact that an activity was on. The copy behaves the same way
from the first learner.