> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getvector.me/llms.txt
> Use this file to discover all available pages before exploring further.

# Scenarios

> Try several plans for the same business side by side — a base case, an aggressive push, a cautious fallback — each as its own project.

<Callout icon="wrench" color="#F59E0B">
  **This area is still in development.** The product marks Modeling as **WIP**: screens, labels and behavior described here can change, and some steps may not work yet.
</Callout>

One set of assumptions answers one "what if". To compare paths — a base case, an aggressive growth push, a cost-conscious fallback — keep each as its own project. Every project has its own assumptions, [actuals](/modeling/actuals-and-forecast) and [snapshots](/modeling/snapshots-and-accuracy), so one plan's numbers never leak into another's.

## Start a scenario

On **Modeling**, click **+ New project** — or **+ another experiment** once you have one. Name it after the plan it tests, and use **Description** to say what you're trying.

If the template offers more than one **Starting preset**, pick one: it sets the numbers the project opens with. Change any of them afterwards. To start a new scenario from where an existing one stands, save that project with **Save as template** — its numbers become a preset of the new template. See [Start a project from a template](/modeling/start-from-a-template).

## Switch between scenarios

**Modeling** lists all your projects, each with its description, when it was last updated and which template version it's on. Click one to open it; **← Projects** at the top takes you back to the list. Each one opens exactly as you left it.

## Save your changes

Changes save on their own a moment after you stop editing. While some haven't saved yet, a dot shows next to the project name; **Save now** saves at once, and the button reads **Saved** when everything is stored.

## Rename or delete a scenario

* **Rename** — click **edit** next to the project name, change the **Name** or **Description**, and click **Save**. Nothing else in the project changes.
* **Delete** — click **delete** on the project's card in the list. It removes the project together with its actuals and snapshots, so Vector asks you to confirm first.

## Where to go next

<Columns cols={2}>
  <Card title="Assumptions and dashboard" icon="arrow-left" href="/modeling/assumptions-and-dashboard">
    The assumptions a scenario is made of.
  </Card>

  <Card title="Snapshots and forecast accuracy" icon="arrow-right" href="/modeling/snapshots-and-accuracy">
    Checking how your forecasts held up.
  </Card>
</Columns>