---
title: "Create box"
canonical: "https://support.appfire.com/space/BGdc/3525181653/Create%20box"
format: markdown
---
## Create a box

You can create a new box in the following ways:

> Macro (children)

## Validate box creation

Boxes can create hierarchies. So before you create a new box, make sure the parent-child relationships you're trying to create are possible.

The following things determine how you can nest boxes:

- In the [box type configuration](https://appfire.atlassian.net/wiki/spaces/BGdc/pages/3525050379), you decide the possible parents of each Box type. [Parent box types](https://appfire.atlassian.net/wiki/spaces/BGdc/pages/3525967887) determine how to build the box hierarchy (nest boxes) and prevent users from making mistakes and mixing methodologies
- Each Box type has [scope type](https://appfire.atlassian.net/wiki/spaces/BGdc/pages/3525542433) settings (None, Own scope, Sub-scope)
- [Sequentiality](https://appfire.atlassian.net/wiki/spaces/BGdc/pages/3525739054) (box type settings)
- [Box period mode](https://appfire.atlassian.net/wiki/spaces/BGdc/pages/3525739054)

## Possible parent box types

Parent Box types determine how you can build the Box hierarchy.

![View of settings, Iteration, Parent Types](media://9d015ce8-8d37-4b4d-870f-ba26e1c9f838)

## Scope type

How the scope types affect box nesting: 

![A table presenting scope settings](media://ab1644fa-cfa8-450b-9023-871921b234a3)

## Sequentiality

Sequentiality settings affect same-level Boxes (can potentially prevent box periods from overlapping). 

**Auto bottom-up** and **auto scope-based** boxes are <u>never</u> sequential - they can always overlap.

> ℹ️ Only "**manual**" and "**auto top-down**" Boxes can be sequential—if set to 'sequential,' same-level sequential Boxes can't overlap.
> ℹ️ 
> ℹ️ ![Validation error when adding a new box](media://f5c94ca8-84c8-409d-9510-214da0a47009)

## Period mode

Box type period mode can affect if a new child Box can be created with a specified start/date. 

### Period of a new box vs. child box period mode

Newly created boxes don't have any children, so they can't be affected by them.

### Period of a new box vs. parent box period mode

- **An "auto top-down" parent** →
  - **limits the period of an "auto top-down" child box **
  - child boxes in "manual"/ "auto scope-based" period mode are not affected
  - "auto bottom-up" child overrides an "auto top-down" parent

Effects of the parent box period mode on a child Box period are outlined in the table below.

| **Parent Box → ** | **New Box (child)** |
| --- | --- |
| auto bottom-up | unaffected (regardless of child period mode) |
| auto scope-based | unaffected (regardless of child period mode) |
| auto top-down | **an "auto top-down" parent limits the period of an "auto top-down" child**  
Period of an "auto bottom-up" child unaffected ("auto bottom-up" child has priority over an auto "top-down parent")  
Periods of "manual" and "auto scope-based" Boxes unaffected |
| manual | unaffected (regardless of child period mode) |